Like the topic title? Can't figure out what the duce is meant by it?

You'll find out if you keep reading.

The "XXX" part stands for having sex with an additional spouse of one's own - not only one's primary wife.

The "Reqs" part involves who to target to woo or coax and solicit to become one's concubine, and her qualifications for her to be targeted for potential acquisition and erotic deployment as one's own personal secondary wife of sorts.

Now, it almost goes without saying that not every guy either wants and/or can afford and/or has the physical stamina and/or has the time and/or has unique situational or circumstantial resources to search for and maritally join with not a "substitute" permanent female sex partner of his own, nor necessarily a "different" one -- and certainly NOT a "replacement."

And adultery with anyone, especially with already-married-to-someone-else women, is forbidden. Biblical grounds for that are plentiful and adamant:

Malachi 2:13 And this again you do. You cover the LORD's altar with tears, with weeping and groaning because he no longer regards the offering or accepts it with favor at your hand.
14 You ask, "Why does he not?" Because the LORD was witness to the covenant between you and the wife of your youth, to whom you have been faithless, though she is your companion and your wife by covenant.
15 Has not the one God made and sustained for us the spirit of life? And what does he desire? Godly offspring. So take heed to yourselves, and let none be faithless to the wife of his youth.
16 "For I hate divorce," says the LORD the God of Israel, "and covering one's garment with violence," says the LORD of hosts. "So take heed to yourselves and do not be faithless."

First Corinthians 7:10 To the married I give charge, not I but the Lord, that the wife should not separate from her husband
First Corinthians 7:11 but if she does, let her remain single or else be reconciled to her husband --and that the husband should not divorce his wife.

Not that ( in some regrettable and lamentable cases) there are not grounds for divorce:

Jeremiah 3:8 She saw that for all the adulteries of that faithless one, Israel, I had sent her away with a decree of divorce; yet her false sister Judah did not fear, but she too went and played the harlot.

Hosea 2:1 Say to your brother, "My people," and to your sister, "She has obtained pity."
2 Plead with your mother, plead -- for she is not my wife, and I am not her husband -- that she put away her harlotry from her face, and her adultery from between her breasts;
3 lest I strip her naked and make her as in the day she was born, and make her like a wilderness, and set her like a parched land, and slay her with thirst.

Matthew 19:3 And Pharisees came up to him and tested him by asking, "Is it lawful to divorce one's wife for any cause?"
4 He answered, "Have you not read that he who made them from the beginning made them male and female,
5 and said, 'For this reason a man shall leave his father and mother and be joined to his wife, and the two shall become one flesh'?
6 So they are no longer two but one flesh. What therefore God has joined together, let not man pull apart."
7 They said to him, "Why then did Moses command one to give a certificate of divorce, and to put her away?"
8 He said to them, "For your hardness of heart Moses allowed you to divorce your wives, but from the beginning it was not so.
9 And I say to you: whoever divorces his wife, except for unchastity, and marries another, commits adultery."
10 The disciples said to Him, "If such is the case of a man with his wife, it is not expedient [i.e. helpful or necessary or needful in the case of those forcefully unmarried by circumstances or others or who on their own disowned defective spouses] to marry."
11 But He said to them, "Not all men can receive this saying, but only those to whom it is given.
12 For there are eunuchs who have been so from birth, and there are eunuchs who have been made eunuchs by men, and there are eunuchs who have made themselves eunuchs for the sake of the kingdom of heaven. He who is able to receive this, let him receive it."

Mark 10:2 And Pharisees came up and in order to test him asked, "Is it lawful for a man to divorce his wife?"
3 He answered them, "What did Moses command you?"
4 They said, "Moses allowed a man to write a certificate of divorce, and to put her away."
5 But Jesus said to them, "For your hardness of heart he wrote you this commandment.
6 But from the beginning of creation, 'God made them male and female.'
7 'For this reason a man shall leave his father and mother and be joined to his wife,
8 and the two shall become one flesh.' So they are no longer two but one flesh.
9 What therefore God has joined together, let not man pull apart."
10 And in the house the disciples asked Him again about this matter.
11 And He said to them, "Whoever divorces his wife and marries another, commits adultery against her;
12 and if she divorces her husband and marries another, she commits adultery."

First Corinthians 7:12 To the others I say, not the Lord, that if any brother has a wife who is an unbeliever, and she consents to live with him, he should not divorce her.
13 If any woman has a husband who is an unbeliever, and he consents to live with her, she should not divorce him.
14 For the unbelieving husband is consecrated through his wife, and the unbelieving wife is consecrated through her husband. Otherwise, your children would be unclean, but as it is they are holy.
15 But if the unbelieving partner desires to separate, let it be so; in such a case the brother or sister is not bound. For God has called us to peace.
16 Wife, how do you know whether you will save your husband? Husband, how do you know whether you will save your wife?

In other words, unless it is absolutely intolerable in one's particular situation with a nasty spouse, they must simply "Get used to it" and "Live with it." "It will thankfully end eventually, so they have to take it patiently for now."

No-Fault Divorce? Divorce for desertion? For abuse? Divorce for feminist insubordination and sexist frigidity?

Colossians 3:19 Husbands, love your wives, and do not be harsh with them.
Ephesians 5:24 As the church is subject to Christ, so let wives also be subject in everything [including sexually-related whatevers] to their husbands.

Divorce for lazy indolence, even while getting Section 8 housing and/or food stamps?

Second Thessalonians 3:10 For even when we were with you, we gave you this command: If any one will not work, let him not eat.
11 For we hear that some of you are living in idleness, mere busybodies, not doing any work.
12 Now such persons we command and exhort in the Lord Jesus Christ to do their work in quietness and to earn their own living.

First Timothy 5:8 If any one does not provide for his relatives, and especially for his own family, he has disowned the faith and is worse than an unbeliever.

But with some guys the overwhelming desire is to seek for and obtain an additional "legal" or "non-legal" spouse (probably with the covert mutually-agreed-upon title of "concubine") -- a secondary "wife" (so to speak) of inferior status compared to their "primary" wives.

Not only guys, but gals can do what is helpful to get a guy to become interested in them as concubine candidates. In the Old Testament, it was gathering at the community watering hole. Or, like Ruth, being the perhaps-employed equivalent of a plantation worker of similar out in the field or whatever in view of the boss or whoever. Nowadays, it can be at a singles gathering, party, or (best yet) enlisting with an internet or other Christianity-compliant dating service.

Before considering getting permission (or not getting explicit and direct permission) from one's current primary wife, and before considering getting permission from the potential concubine herself to consider herself a non-adulterous guy's new permanent and probably-non-legally-registered non-fornicative concubine (similar but in no way identical to a "shacking up" or "cohabitational live-in" situation), the potential concubine's qualifications to be considered a concubine candidate must be dealt with and proven.

It seems to me that the very first turnoff a potential concubine could impose, resulting in prompt and decisive disqualification in a guy's estimation, would be if the gal is public misdressed with loose-long-haired mopheadedness, and/or naked-armed sleeveslessness and/or nude-legged slackslessness or shortened-skirtedness, or soxlessness in sandals or flipflops.

The reason for that is that the guy is seriously asking himself if he would be proud of the woman, proud to accompany her and her to accompany him in public instead of being ashamed of her and she ashamed of him, want her to be the good-example-and-influence, trustworthy, stay-at-home-domestic, submissive-to-him-and-especially-God mother of his children possibly produced with her -- or instead if he would worry about her when he is not around, that she would wander around with non-content boredom, flirt on the internet, go out and roam around shopping and spending his hard-earned income on needless vanities, sadistically tempting and tantalizing other guys by her immodesty and thus put other guys under pressure to solicit or bribe her into some defiling and pollutive extramarital sexual "affair."

So, if she has her hair up in a bun or chignon, or has it bound into a single back-of-head ponytail, and and is wearing long sleeves and long non-tight slacks or long non-slitted skirt and shoes with socks or boots . . . she will pass the first test, the initial hurdle, to be considered as a concubine candidate.

Interesting it is that all just mentioned was mentioned -- before even alluding to whether she is well-proportioned or instead too fat, whether or not she looks substantially crippled, whether too tall or too short, whether caucasian or asian or whatever, whether she wears any noxious tattoos or piercings, stinky perfume, disgusting red or black fingernail, has any wedding-band ring on the 4th finger of her left hand, and whether she has a cute-enough face.

But what is stated in the previous paragraph is, then, understandably and additionally what is considered for concubinal qualification.

Having "jumped though that hoop," the next step would be verbal or written communication either directly to her or indirectly by means of some cooperative and reliable messenger - and if by messenger, rather soon writing or speaking to her face to face.

What common chit-chat remarks or comments are then made, leading into whatever subject matters, is up to the sensible and cautious imagination of the guy functioning as a friendly-neighbor quasi-inquisitor. How forward or aggressive a guy chooses to be in trying to set up some interesting-to-her follow-up meeting for agreed-to continued conversation or typical-public common activity of some sort, is the next step.

It is neither inappropriate nor inconsiderate to at least eventually make certain comments to her about news or weather or whatever by which the guy can subtly probe and discover her casual-reponse feelings disclosing her sense of morality or lack of it relating to his well-chosen subjects of discussion.

To wit, if a guy detects that a gal seems even slightly sympathetic to allusive references relating to hot-topic issues like atheism, evolution, same-gender sodomy unions, abortion homicide, antisemitism, disdain about Israeli ownership of their land, feminist chauvenism, tolerance of warm-weather exhibitionism, superstitious belief in outer-space aliens or astrology, and so on . . . it, of course, behooves the gentleman to politely and gradually - though respectfully, kindly, and graciously - back off using whatever "I guess I have to go, I have an appointment" excuse he can use without blatantly lying or appearing shocked, defensive, offended or discourteous.

For a gal who passes those concubinal-candidate tests consistently, after whatever number of increasingly-frequent meetings with the intrigued fellow for longer and longer periods of duration, the subject of potential relationship of both to each other finally comes about, and being that we American live in the sad generally-anti-polygamous culture we live in (while most citizens are not overly aghast at non-legally-married opposite-sex couples "shacking up" or cohabitationally "living together), a statement of the guy to the humble-minded and open-minded gals that he "finds interesting" the God-allowed examples of Old-Testament patriarchs (such as Abraham, Jacob, Gideon, David, and Solomon) who had more than one permanent marital sex partner sometimes called "concubines." Upon which mention, if she expresses initial surprise and concern and momentary reluctance, he should immediately reassure her that he fully intends to be faithful to both his permanent primary wife and whoever his permanent secondary-spouse concubine becomes when he selects one in the near future, then perhaps gently even offers her the position if she is interested.

Contemplation of why a guy would want to acquire and possess his own additional willing and voluntary permanent-spouse concubine for both the polygamy-intended guy and the initially-surprised-or-somewhat-taken-back concubine candidate would probably entail them discussing why Old-Testament Hebrew patriarchs such as Abraham, Jacob, Gideon, David, Solomon, and others actually did engage in harem relationships with sundry Jewish women.

Though I am not condoning it, the sordid and despicable modern-day licentuous-impurity-and-idolatry substitution in place of polygamy with harems is the plethora of completely-nude pictoral images which erotically-starving men produce, seek, and save from "girlie" magazines and from the internet Web by downloading pics and vids to hard drives and flashdrives, retained in private for hidden and usually-non-admitted sensual enjoyment now and then. Sometimes, particularly with younger and non-married men, that is accentuated and exacerbated by the "legal" availability of rather expensive "therapeutic" masseuse and escort harlots or prostitutes . . . but the God-intended outlet is meant to at least be genitally conjugating and copulating with real live-body permanent-spouse multiple women with whom real children can be birthed to fulfill the Creator's population-maintenance command to his human species of: "Be fruitful and multiply."

Did the Hebrew patriarchs not love their primary permanent wives? Were their primary wives defective in some ways occasionally so as to not adequately satisfy the sexual urges of their thus sexually-desperate polygamous husbands? How could such men honestly tell their primary wives that they loved them, then turn around and honestly state to their concubines that they loved those concubines as permanent spouses? Why did God never specifically prohibit such non-adulterous harem polygamy, and even made allowance for it in Torah Law?

Deuteronomy 21:15 If a man has two wives, the one loved and the other disliked, and they have borne him children, both the loved and the disliked, and if the first-born son is hers that is disliked,
16 then on the day when he assigns his possessions as an inheritance to his sons, he may not treat the son of the loved as the first-born in preference to the son of the disliked, who is the first-born,
17 but he shall acknowledge the first-born, the son of the disliked, by giving him a double portion of all that he has, for he is the first issue of his strength; the right of the first-born is his.

Why did God put it into the minds of Judah and Moses to require perhaps-already-married men to marry and have intercourse with the widows of relatives?

Genesis 38:8 Then Judah said to Onan, "Go in to your brother's wife, and perform the duty of a brother-in-law to her, and raise up offspring for your brother."
Deuteronomy 25:5 If brothers dwell together, and one of them dies and has no son, the wife of the dead shall not be married outside the family to a stranger; her husband's brother shall go in to her, and take her as his wife, and perform the duty of a husband's brother to her.
Matthew 22:24 . . . Teacher, Moses said, 'If a man dies, having no children, his brother must marry the widow, and raise up children for his brother.'
Mark 12:19 "Teacher, Moses wrote for us that if a man's brother dies and leaves a wife, but leaves no child, the man must take the wife, and raise up children for his brother."
Luke 20:28 . . . and they asked him a question, saying, "Teacher, Moses wrote for us that if a man's brother dies, having a wife but no children, the man must take the wife and raise up children for his brother.

Notice, however, that the "next of kin" mentioned in the Old-Testament book of Ruth did not find it convenient to comply with the above-stated command:

Ruth 4:6 Then the next of kin said, "I cannot redeem it [and thus also acquire Ruth as wife] for myself, lest I impair my own inheritance [whether my wife? would or would not object to the additional woman as my extra spouse?]. Take my right of redemption yourself, for I cannot redeem it."

Why did the LORD limit a non-specified number of wives for only kings?

Deuteronomy 17:14 When you come to the land which the LORD your God gives you, and you possess it and reside in it, and then say, 'I will set a king over me, like all the nations that are round about me';
15 you may indeed set as king over you him whom the LORD your God will choose. One from among your brethren you shall set as king over you; you may not put a foreigner over you, who is not your brother.
16 Only he must not multiply horses for himself, or cause the people to return to Egypt in order to multiply horses, since the LORD has said to you, 'You shall never return that way again.'
17 And he shall not multiply wives for himself, lest his heart turn away; nor shall he greatly multiply for himself silver and gold.

Why did God never say that acquisition and utilization of willing and voluntary multiple concubines for Abraham and David and Solomon was sinful and something they would burn in Hell for?

Genesis 4:23 Lamech said to his wives: "Adah and Zillah, hear my voice; you wives of Lamech, hearken to what I say: I have slain a man for wounding me, a young man for striking me."

Genesis 25:6 But to the sons of his concubines Abraham gave gifts, and while he was still living he sent them away from his son Isaac, eastward to the east country.

Genesis 16:1 Now Sarai, Abram's wife, bore him no children. She had an Egyptian maid whose name was Hagar;
2 and Sarai said to Abram, "Hey now, the LORD has prevented me from bearing children; go in to my maid; it may be that I shall obtain children by her." And Abram responded to the voice of Sarai.
3 So, after Abram had lived ten years in the land of Canaan, Sarai, Abram's wife, took Hagar the Egyptian, her maid, and gave her to Abram her husband as a wife.
4 And he went in to Hagar, and she conceived; and when she saw that she had conceived, she looked with contempt on her mistress. [And how many times did Abram look into the eyes of the concubine/maid he had had sexual intercourse with, and say: "I love you, dear?"]
5 And Sarai said to Abram, "May the wrong done to me be on you! I gave my maid to your embrace, and when she saw that she had conceived, she looked on me with contempt. May the LORD judge between you and me!"
6 But Abram said to Sarai, "Hey, your maid is in your power; do to her as you please." Then Sarai dealt harshly with her, and she fled from her.
7 The angel of the LORD found her by a spring of water in the wilderness, the spring on the way to Shur.
8 And he said, "Hagar, maid of Sarai, where have you come from and where are you going?" She said, "I am fleeing from my mistress Sarai."
9 The angel of the LORD said to her, "Return to your mistress, and submit to her."
10 The angel of the LORD also said to her, "I will so greatly multiply your descendants that they cannot be numbered for number."
11 And the angel of the LORD said to her, "Hey, you are with child, and shall bear a son; you shall call his name Ishmael; because the LORD has given heed to your affliction.

Genesis 30:1 When Rachel saw that she bore Jacob no children, she envied her sister; and she said to Jacob, "Give me children, or I shall die!"
2 Jacob's anger was kindled against Rachel, and he said, "Am I in the place of God, who has withheld from you the fruit of the womb?"
3 Then she said, "Here is my maid Bilhah; go in to her, that she may bear upon my knees, and even I may have children through her."
4 So she gave him her maid Bilhah as a wife; and Jacob went in to her.
5 And Bilhah conceived and bore Jacob a son.
6 Then Rachel said, "God has judged me, and has also heard my voice and given me a son"; therefore she called his name Dan.
7 Rachel's maid Bilhah conceived again and bore Jacob a second son.
8 Then Rachel said, "With mighty wrestlings I have wrestled with my sister, and have prevailed"; so she called his name Naphtali.
9 When Leah saw that she had ceased bearing children, she took her maid Zilpah and gave her to Jacob as a wife.
10 Then Leah's maid Zilpah bore Jacob a son.
11 And Leah said, "Good fortune!" so she called his name Gad.
12 Leah's maid Zilpah bore Jacob a second son.
13 And Leah said, "Happy am I! For the women will call me happy"; so she called his name Asher.

Genesis 31:17 So Jacob got up, and set his sons and his wives on camels.

Genesis 36:2 Esau took his wives from the Canaanites: Adah the daughter of Elon the Hittite, Oholibamah the daughter of Anah the son of Zibeon the Hivite

Judges 8:30 Now Gideon had seventy sons, his own offspring, for he had many wives.

First Samuel 1:1 There was a certain man of Ramathaimzophim of the hill country of Ephraim, whose name was Elkanah the son of Jeroham, son of Elihu, son of Tohu, son of Zuph, an Ephraimite.
2 He had two wives; the name of the one was Hannah, and the name of the other Peninnah. And Peninnah had children, but Hannah had no children.
3 Now this man used to go up year by year from his city to worship and to sacrifice to the LORD of hosts at Shiloh, where the two sons of Eli, Hophni and Phinehas, were priests of the LORD.
4 On the day when Elkanah sacrificed, he would give portions to Peninnah his wife and to all her sons and daughters;
5 and, although he loved Hannah, he would give Hannah only one portion, because the LORD had closed her womb.
6 And her rival used to provoke her sorely, to irritate her, because the LORD had closed her womb.
Second Samuel 5:13 And David took more concubines and wives from Jerusalem, after he came from Hebron; and more sons and daughters were born to David.
Second Samuel 20:3 And David came to his house at Jerusalem; and the king took the ten concubines whom he had left to care for the house, and put them in a house under guard, and provided for them, but did not go in to them. So they were shut up until the day of their death, living as if in widowhood.

First Kings 11:3 [Solomon] had seven hundred wives, princesses, and three hundred concubines; and his wives turned away his heart.
First Chronicles 3:9 All these were David's sons, besides the sons of the concubines; and Tamar was their sister.

Second Chronicles 11:21 Rehoboam loved Maacah the daughter of Absalom above all his wives and concubines (he took eighteen wives and sixty concubines, and had twenty-eight sons and sixty daughters)
v Esther 2:14 In the evening she went, and in the morning she came back to the second harem in custody of Shaashgaz the king's eunuch who was in charge of the concubines; she did not go in to the king again, unless the king delighted in her and she was summoned by name.

Ecclesiastes 2:8 I also gathered for myself silver and gold and the treasure of kings and provinces; I got singers, both men and women, and many concubines, man's delight.

Song of Solomon 6:8 There are sixty queens and eighty concubines, and maidens without number.
Song of Solomon 6:9 My dove, my perfect one, is only one, the darling of her mother, flawless to her that bore her. The maidens saw her and called her happy; the queens and concubines also, and they praised her.

Why did the Holy Spirit, speaking through Divinely-inspired Saint Paul, restrict only bishops and deacons to monogamy?

First Timothy 3:2 Now a bishop must be above reproach, the husband of one wife, temperate, sensible, dignified, hospitable, an apt teacher,
First Timothy 3:12 Let deacons be the husband of one wife, and let them manage their children and their households well.

With all that Biblical precedent, it is puzzling why demonically-carnal deviates infesting the United States are so disparaging and condemnatory against particularly politicians with extra women on the side, as if that was some type of impeachable crime and mortal sin.

Don't get me wrong. The Bible has a lot to say against not only homogay and homosodomite homosexuality, but against fornication of all types and degrees, plus adultery of all kinds and severities. For example:

First Corinthians 6:9 Do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived; neither the immoral, nor idolaters, nor adulterers, nor homogay effeminate, nor same-gender sodomites,
10 nor thieves, nor the greedy, nor drunkards, nor revilers, nor robbers will inherit the kingdom of God.
11 And such were some of you. But you were washed, you were sanctified, you were justified in the name of the Lord Jesus Christ and in the Spirit of our God.

First Corinthians 6:18 Shun immorality. Every other sin which a man commits is outside the body; but the immoral man sins against his own body.

Ephesians 5:5 Be sure of this, that no fornicator or impure man, or one who is covetous, that is, an idolater, has any inheritance in the kingdom of Christ and of God.

First Timothy 1:8 Now we know that the law is good, if any one uses it lawfully,
9 understanding this, that the law is not laid down for the just but for the lawless and disobedient, for the ungodly and sinners, for the unholy and profane, for murderers of fathers and murderers of mothers, for manslayers,
10 immoral persons, sodomites, kidnappers, liars, perjurers, and whatever else is contrary to sound doctrine.

Hebrews 12:16 . . . that no one be immoral or irreligious like Esau, who sold his birthright for a single meal.
Hebrews 13:4 Let marriage be held in honor among all, and let the marriage bed be non-defiled; for God will judge the immoral and adulterous.

Revelation 21:8 But as for the cowardly, the faithless, the polluted, as for murderers, fornicators, sorcerers, idolaters, and all liars, their lot shall be in the lake that burns with fire and sulphur, which is the second death."
Revelation 22:15 Outside are the dogs and sorcerers and fornicators and murderers and idolaters, and every one who loves and practices falsehood.

Any savvy woman who would accept that arrangement is not considered gullible but - if a true and genuine Christian - would seriously consider that offer if coming from an equally authentic Christian man already husband to and of a primary wife of his own. That would be even more likely if the concubine candidate had no viable alternatives (such as any other guys to select from of suitable quality).

If romantic relationship did culminate in a wedding-or-no-wedding marriage of the guy with that additional-spouse concubine, whether or not the primary wife would previously or eventually be informed about all that would be the choice of the man and his non-State-licensed concubine, with whatever consequences thereafter followed.