Don't think you can seduce a meeting of 50-60 HBs at once
If you can please mentor me lol
You would demonstrate high value quite easily by showing confidence in running the meeting. Or 'leader of men' quality in MM. This will gain you a natural door to speak to these women. Plus you're their boss so they're gonna be sucking up to you anyway..
The key is to 'be the exception to the rule'. If they are acting extra nice to you coz they want to exploit your position do the opposite to what every other manager would do under that pressure from a HB. Don't even enjoy the attention for example tease and joke about anything she says about you, and always make sure what you say shows you are in the position of value not her.
So in summary the meeting/your position will elevate you socially if you carry yourself well (which you say you do) this will give you an incredible advantage in your game as most of the ground work is done for you.
Still you may want to start with seducing one at a time.
