Calculate paint needed

[CAMB147]

I'm working on a major reno job; whole house totally gutted to the studs and getting new heat/ac/electric now. I'm using Home Designer Pro 2025. I want to calculate the total paint I'll need for all the walls to buy mass qty of kilz pva. I've been looking at the materials list and I could probably go through everything and add up the sq. ft. but I wonder if there's a way to get it to calculate it for me. Also, along these lines, is there a way to have HD Pro add everything to the master list? I thought the master list would collect items by material not sorted into floors and rooms but that doesn't appear to be the case. How does one convert this information into a convenient shopping list?

Thanks,