A control schedule that dictates which constructions that are active at given times throughout the simulation. Inputs can be either the identifiers of schedules within the library or custom schedules made with any of the honeybee schedule components. The values of the schedule should be intergers and range from 0 to one less then the number of constructions. Zero indicates that the first construction is active, one indicates that the second on is active, etc. The schedule type limits of this schedule should be "Control Level." If building custom schedule type limits that describe a particular range of states, the type limits should be "Discrete" and the unit type should be "Mode," "Control," or some other fractional unit.