Build the individual buttons that send the desired Ccs.
Build the main supercontrol, assign the six ON buttons as subcontrols. If you want them to send ON only, select that option in OPTIONS AS SUPER.
Build a second supercontrol, assign the one OFF button as subcontrol. In OPTIONS AS SUPER, select both SEND ON ONLY and INVERTED.
Make this a subcontrol of the main subcontrol.