Questions about High-rise residential LEED Energy Modeling

Hi I’m working on a High-rise residential LEED energy modeling project now. I have a question regarding the lighting. I’m using Energypro, and found out the lighting saving is zero from the Title-24 LEED calculation no matter what the design input is. Does that mean we cannot count on lighting savings for residential project? 2nd question: the first floor of this project is retail area. MEP wise, it’s for future use. So there is no design on that area. But this is a LEED NC project and the retail area is included in the architectural design, and will be included in the LEED scope. For this kind of situation, how should I model it? 3rd question: can I treat the underground garage lighting as exterior lighting? Thanks. -Tommy