It is susposed to be one woman and a man spending their future life together - that is what society teachers a teenage girl - so it can be a shock initially if her boyfriend says he wants her to kiss another guy and share her pussy with more than one man.
So she may struggle with her feelings for a few weeks, and may discuss it with her friends. If her friends think it could be fun, she will feel reassured that she will be doing nothing weird that hasn't been done before.
She has to allow your fantasy to grow in her mind until she feels she is ready. It might take years, or she may meet a stranger the next day - and the chemistry is such that they bond immediately and feel like special friends who can talk openly about their secret desires from day one.
When you give your g/f or wife permission, she may want to experiment behind your back with flirting to test the waters of her readiness with guys she knows.
She can subtly hit on guys with her eyes without using words, to see if they are "available" to help her start her cuckoldress journey.
It is a lot harder to go out to a night club and nervously shake in her boots as she wonders how disappointed she will be if no guys are suitable. All that work getting herself in party mood, a night wasted - not even a nice kiss.
If you give your wife/girlfriend permission to take lovers, it does not matter whether you know about it or not.
You have said, "I want you to", so seeing it is her body, she should be able to make her own arrangements for this "other marriage with her lover(s)".
You can't control how often your wife goes out with her Bulls, as that will depend on a lot of things. Just stand aside, and feel excitement that she has accepted your gift of extra loving. She has given you a gift in return to prove her love - she has made your fantasy become real.
A committed cuckold looks forward to his wife bringing home creampies, because that is the ultimate proof that his sexual fantasy has become real. He instantly goes down on his knees and powerfully licks her love box to give her an extra orgasm. She can look forward to this, because it sets things straight in her mind - she knows both bull and hubby are rather fond of her.
There is something special about two men sharing one woman's body - she won't feel shunned or neglected. Seeing their lust for her makes her realise that her body is very much desired - great for her self-esteem.