I wanted to clarify, I am not a "worshipper" of anything. I am a non-dogmatic person in everyway.
The temple is more of a tribute than a place of worship. (I just wanted to be clear :-P )

When starting a new group you need people people people people. Try meet ups to increase your numbers. Allow people to join and warn them it is a gay-friendly circle and there will probably be invitations to group sexual activities which they do not have to join but are welcomed to join.

Make sure you have an aim for the group. Where the group is goign good luck. I don't have enough gay magickal friends here to start a group I only have a few but we all love our sex magick!!! yay!

Beaware that as you practice group sex magick rituals large members of the group began to show signs of major connectivity and so setting a group dreamspace is a good idea and beaware of a few powerful psychic connections that will show themselves. Always remember the difference between an orgy and sex magick with multiple people is PURPOSE.

give the group an aim or else it will just become a group of regular orgies. Rules need to be set in place as to whether it is okay for people to meet outside of the circle for sex magick especially when someone has a bf. Watch out people with boyfriends in fiarly open fairly closed relationships! It maybe ok for them to participate in group sex magick but their boyfirend might feel differently if they participate in sex magick with one person.

it's a bit of a difficult situation. Often in groups of this nature there's an "inner sanctum" which is the only place where Sex Magick occurs and people only get invited in to this part when EVERYONE else is happy for them to be.