От автора -
Modification name: Groups on Registration and Custom Profile Fields
Author: mtrs
Modification description: This mod can display groups on registration screen to join. Displayed groups cannot be special groups; request, closed and hidden type group membership requests need to be approved. It can also brings the ability of adding users to groups based on custom profile fields data. Whenever a user's custom profile fields data is changed, custom profile fields groups are updated. Admininistrators can batch add/remove users to/from custom profile fields based groups at ACP.
Modification version: 1.0.1
Tested on phpBB version: 3.0.6