Open the Apps menu and select User Manager.

Figure 3.14.  Search fields

In field Type (1) select if you want to search for users or groups.

In field Domain (2) select the domain.

In field Search (3) enter your search. The results matching your search are displayed in the list below (4).

In order to open the detail view, you can either double-click a user or group or select it and click the Edit icon.