The project I am working on is a bus station that has an enclosed retail area with an underground parking and an outdoor above ground parking space. The building will use natural/mechanical ventilation but no AC system, but for simulation purposes we are using a HVAC system according to Table G3.1.1A & B.

The underground parking will have some retail spaces but the outdoor parking will have lighting as the sole load

My question is:
Do I have to consider the underground parking as served by the HVAC system? What happens with the outdoor parking space, can I simulate it as external lighting?

I am using eQuest 3.64 by the way.