You create a form in Identity Portal (IDP) to allow administrators to search and add users to a group.
You create a Modify Group task in IM --> map it to a Task in IDP --> create a form with Profile and Membership --> in Membership tab, you configure as follow:
- Property name = Members
- Property Type = Relations
- Server Type = String
- Target Name = Membership-Tab-Users
- Target Object = User
When an administrator opens the form to add members into a group, no existing users are listed. In Identity Manager User Console, the related Modify Group task displays existing members fine.