Restricting Creating Group with Membership Plugin?

Hello,

I'm looking for a good method of restricting the creation of Groups in BuddyPress. I've found several plugins but the configuration seems messy and relies on the user roles from WP. Has anyone had success using Membership plugin to assign a level where people can create groups? I want everyone to be able to post on a group forum, but just restrict the creation of a group.

Best,

Eddie