To manage the host groups, follow these instructions:
Go to Hosts → Manage groups on the menu.
On the Manage groups page, select a host view by clicking its tab. Proceed to add or modify a group:
To add a new group to the host view, click the topmost Add subgroup button and enter a descriptive name for the new group.
After you have created some groups, you can also add new subgroups under the existing groups by clicking their Add subgroup buttons.
To rename a host group, click the Rename button next to the group you wish to rename, and enter a new name for the group.
To move a host group, click the Move button next to the group you wish to move, and select a new parent group from the drop-down list.
To delete a host group, click the Delete button next to the group you wish to remove.
A host group cannot be removed if other objects of the system refer to it. If this is the case, a warning message will be shown.
If no objects refer to the host group, you will be asked for confirmation. Click Yes to proceed with the deletion.
To save and return to the Manage groups page, click Save.