We are currently remodeling the local American Legion and changing as much as possible to lower our utility bills. The 2 restrooms in the meeting hall share a wall and an exhaust fan. They each have and overhead flourescent light. Each restroom has one wall switch that appears to be a four way. When the switch is turned on in one room the exhaust fan comes on and the light for that room. The common exhaust fan comes on from either switch, but the light for only the room the switch is in. We would like to change these switches to motion activated timed switches. Can this be done?