Yes. If you make the group a "closed group" (this option is available when creating the group), then only the owner can add/remove members. The owner can make members of the group admins, who will also be able to add/remove members.
Yes if you have the brains and patience in reviewing each contract, then you're golden. You obviously already have the muscle but also don't forget to familiarize with the tools...
You can't be certain just based on the size of the church. Think of other factors, like whether the membership is exclusive and if you're allowed to speak to other...
As a site user, you don't have the privilege to deleted or modify listings directly. However, you can submit an edited version of the listing, which will be reviewed by...
Attendance really shouldn't be a problem if they don't pay, but make sure they know they won't be voting members. If the topics at hand are not that serious, allow...