System and methods for reconfiguring rooms or zones within an area in building automation are disclosed. One of the methods includes receiving a user request to group together at least a first segment and a second segment in a zone and verifying the user request using one or more rules. Upon verification of the user request, the method automatically links each object in the master segment to the corresponding object in the second segment to create the zone. Within this zone, a control program of the master segment provides a synchronized control of the environmental control equipment in the master segment and the second segment. This method of zoning provides the flexibility to perform rezoning on the fly without requiring traditional engineering, redesign or reprogramming.