Thanks Krileon
Description that is in the plugin.
Community Builder: Edit Plugin [Auto Group]
Description
Auto Group 2.4 allows to set the user groups based on a field value.
Enter the field group mapping rules (a rule per row) in the format fieldname;fieldvalue,fieldvalue, ... ,fieldvalue;groupname,groupname, ... ,groupname;unassing. The last field can be true or false (default), where true means that listed groups SHOULD be unassigned if the field has a different value from what specified and the group IS NOT EXPLICITLY ASSIGNED BY ANOTHER PREVIOUS OR SUBSEQUENT RULE (this means assign always has precedence over unassign). Rules are checked row by row, and a list of 'groups to add' and 'groups to remove' is compiled. When a new group to add is found it is dropped by the 'groups to remove' (add group has always priority over remove group). At the end 'groups to add' are first added, then 'groups to remove' are then removed. This order (first add, then remove) is important to ensure an user always has at least one group assigned (as required by Joomla). Field types supported are Check Box (Single), Check Box (Multiple), Drop Down (Single Select), Drop Down (Multi-select), Text Area, Text Field, Radio Buttons. For Check Box (Single) the field values for the plugin settings are 0 when unchecked and 1 when checked.