A multi-state or enumerated schedule controls objects that have states based on integers or positive whole numbers including zero.
For example, a multi-state weekly schedule is bound to a multi-state value that controls an air handling unit in an office building. It regulates the air circulation Monday through Friday from 08:00 to 17:00, to 2 (occupied) when the schedule is active and 1 (unoccupied) when the schedule is inactive.