Vic,
The Epoch II has Main, Aux., and Rear serial boards "FCB" for car calls that are programmable for the floors you want to use. There is a rear car call serial board used only for the first floor. I can't remember if these other floors can be turned on or not and I have not been able to find my manuals on the system. I'm sure I could make this work if I spent enough time on it but I think GreenPants is right, they would be better off just modding even this one car and taking it out of the group since they want to use it as a Service Elevator.
