Although this requirement not explicitly stated in the LEED Reference Guide, project teams are now being asked to demonstrate that at least two levels of control are provided in multi-occupant spaces (like conference rooms). A single on-off switch is not compliant, and an on-off switch with an occupancy sensor is no longer compliant either. Examples of the most common compliant scenarios for multi-occupants spaces include: two (or more) lighting zones with on-off switches; an on-off switch combined with window blinds; and an on-off switch with a dimmer.