By default, Group view shows you information only about the devices in the selected group. You can elect to include devices in any subgroups of the selected group.
To include devices in subgroups, click Include Sub Groups  (located at the far 
 right of the Content pane's header). To switch back to show only the devices 
 in the current group, click Current Group Only
 (located at the far 
 right of the Content pane's header). To switch back to show only the devices 
 in the current group, click Current Group Only  .
.