Each host view is divided into groups and subgroups. If no groups are defined for the view or host(s) are not assigned to any groups, the hosts will be under Holding area. The Holding area is the default group in each view and it is permanently present in all views.
Host groups are managed on the Manage groups page. To access the page, click Hosts → Manage groups on the menu.
The number of host groups is not limited, but a couple of hundred groups should be enough.
If a group has subgroups, a plus sign (
+) is displayed before the group name. Click the plus sign to expand the subgroups.
An example of an Operating-System-based view and host grouping is shown in Figure 8.6.