Have any of you been involved with a group (online or physical) that had a formal BDSM mentoring process available?

What I mean by this is a process where someone new to the community could go to a group leader and be matched up with a mentor, rather than haphazardly finding one on their own?

I know of some groups that have tried this over the years, but participation seems to peak and then fall rapidly, so I was curious if any groups had been more successful with implementing it.