When the room goes unoccupied, the thermostat will set its Heat and Cool set points back the number of Unoccupied Setback degrees you set in the last occurred scheduled set time.
For example, if there is a scheduled set time for 7:00AM with a heat set point of 68°F, a cool set point of 73°F, and an Unoccupied Setback of 10°F: If the room becomes occupied at 8:00AM the thermostat will set its heat set point to 68°F and its cool set point to 73°F. If the room goes unoccupied at 12:00PM, the thermostat will set its heat set point to 58°F (68°F-10°F) and its cool set point to 83°F (73°F+10°F).
If you want to thermostat to turn to OFF when Unoccupied, set the Unoccupied Setback to OFF.