You can create a server group and manually add servers to the group. The server group remains the same until you add or delete servers.
Procedure
From the navigation pane, go to Manage > Server groups.
The Server groups page appears.
In the upper-right corner of the page, click Add.
The Add server group dialog box appears.
In the Name box, enter a name for the server group.
Select Manual Association.
In the Servers list, select the servers that you want to associate with the server group.
Tips:
Use the search box to filter the servers by name.
To show only the servers that you selected in the Servers list, select the Show selected check box.
Click Save.