BuddyPress.org

Erich, it can be done as is discussed on the invite-anyone thread, at the moment the best approach is create the group, then when created go to your profile from where you can then begin to send your email invites, or finish the group creation , click the send invites tab, on that screen use the link to your profile > send invites.

So Users CAN send email invites, What may be a help as I mentioned is that there is more detailed terxt guides on creation screens explaining what and how to do things.