hi! im looking for this also, Im thinking in a solution maybe someone can help me... here are some steps
1. We need to add the code for add a user in the table of usergroups the function is in: admin/usergroups.php but is it in a "admin" folder it will be a risk to call this or I need to recreate??
2. Put the code in the registration form and the edit form, this will be simple but I like to know if there are no risk of someone inject a specified usegroup that can make changes in the gallery
thanks and clickymouse if I found a fix to this Ill post it or someone can find this steps useful please hep us