The Add Service Group Dependencies dialog has the following components:
Choose one or more service groups from the list of candidates Lists all the service groups on your system. Select a service group from this list and then click OK to add it to the list of services and service groups on the Dependencies tab of the Service property sheet.
You can select multiple service groups by holding Shift while you click. Double-clicking adds the selected service group to the list on the Dependencies tab and closes the dialog.