Group Transitions Enables transitions for users between different groups. Transitions will create a user approval workflow. Please see: http://dev.tiki.org/Workspace+Roadmap#Group_transitions Try it: http://profiles.tiki.org/Group_Transition_Demonstration Until Tiki5 , you need to write your transitions using profiles . Starting in Tiki6 , there is a GUI at tiki-admin_transitions.php