A newbie here and just stated to program within the C-Bus Toolkit. I have a layout description for what I call as a ?Zone? and is is hardwired for the output units. Now in the tool-kit under ?Lighting Groups? I have been adding as the units are wires within the ?Zone? (Bathroom, Hallway, Closet, Server Room,?? ) So my question is to all is am I identifying correctly or do I need to think of a ?Group? is a combined section like: "lights 1, lights 2, lights 3" to be used as one keypad press will then in turn on lights 1,2,3. Thanks Alan. D