NSFW Friends

I recently recalled reading stories here about fuck barkadas a while back and it made me wonder how common is it. For those of you who have NSFW friends or go to fuck barkadas how did you go about meeting them and how did you go about forming that type of set up? I've heard some of the wildest and hottest things from people with friend orgies but can't disclose the details since I promised I'd be discreet. If any of you who have experience be kind enough to enlighten me further in this wild and exciting world please do :) (M here btw)