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To manage engine capacity groups:
In System Management Center, click System Settings in the left navigation and then click Engine Capacity Groups.
You see the Engine Capacity Group workspace.To edit an existing group, right click a group and select Edit.
You can edit the Default group, but you cannot not delete it. You can edit and delete custom groups.In the Edit Group dialog box, make the appropriate changes and click Save.
To add a new group, right click anywhere in the workspace and select New.
In the New Group dialog box, complete the appropriate fields and click Save.
To delete a group, right click the group and select Delete.
To close the workspace, click the X in the Engine Capacity Groups bottom tab.