XF 1.1 Promotions

Hey there. I have a situation in my community where I need to allow my moderators to change the usergroup of somebody up to a certain group. Is there any way, without giving FULL admin cp to the mod, to allow the mod to promote up to a certain groups?
very much interested into this as well. Without giving them the ability to delete users or set other usergroups, I just want to allow some moderators to set individual user group promotions...