Ask How do you set up a forum inside a membership site?

[SuperAffiliateX]

I want to add a forum to my membership site but I have no idea where to go about it. What platform should I use? How do I make sure only paying members can access it? I also wonder how to keep it active and prevent spam. Should I set rules or let members guide the discussions? I want it to be a place where members engage and share value. If you've done this before, I'd love some advice. How do you set up a forum inside a membership site?