Hello, I'm installing and programming a basic home security system. I'm using a DSC PC1832 control panel. I have 2 keypads and a number of devices (door and window contacts, pir's, smoke and heat detectors). The home is divided into 2 suites (owner's and tenant's) and I've partitioned the control panel into 2 partitions. I've added a zone expander so I have 16 zones to work with. My question is regarding one room (laundry room) which is shared by the owner and the tenant, who each have a door going into the laundry room and there is also a door that goes to the carport, which is the tenant's main entry/exit but is also used by the owner. Can this door be a zone that is controlled by both partitions, that is can you create common zones? Thanks for your help. I'm taking a security systems course and I have the installation and programming manuals.