BuddyPress.org

you can use s2member plugin for this. Create two different levels of users 1. Normal 2. VIP. Then using the url restriction restrict the group creation for users at level 1.
If you want the VIP also to be a free member, check out the “free trial” number of days. I think you can specify 1yr. After one year they wont be able to creat the group

Hope it helps.