In order to display the main window of User Manager to view groups, from the toolbar select → . If you want to view all the groups, clear the Hide system users and groups check box.
The Groups tab provides a list of local groups with information about their group ID and group members as you can see in the picture below.
Figure 3.3. Viewing Groups
To find a specific group, type the first few letters of the name in the Search filter field and either press Enter, or click the button. You can also sort the items according to any of the available columns by clicking the column header.