Hi, I am developing a smart school site where one of the user roles is "collage". Users belongs to this role need to be allowed to administer a subset of users "students" in the site. The subset of users can be the users in OG group. The group admin need to be allowed to create, edit, block and delete users in the group context. I managed to achieve this by granting "administer users" permission to role "college" and with a custom module i altered the access callback for item 'user/%user/delete' and 'user/%user_category/edit' (to prevent admin from one group, editing or deleting the students account on other group). I guess this will have a potential security problem in future, would like to know if there is any module/ workaround/ hack to achieve this requirement in drupal way. Any help will be greatly appreciated. Thanks in advance. -- Sivaji