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.
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.
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.