Generally the designers will layout cameras when designing a new pit area or slot area. but that is just to get a basic idea. they never consider ceiling hight or designs in the ceiling. So a lot of it depends on experience. also , if you go by prints they leave out a lot of details that you have to deal with and area is completed. The true placement of your cameras happens when the area is completed and the tables are on the floor you can't rely on prints or design software because you never know what obstacles you will run into when actually place them. for the most part the design of it can help you figure out your basics. We have da many subs go by print or design when doing an install for us and we always have cameras that have to be moved or lens swapped. Plus if you work in the gaming side of CCTV there is always someone changing layout because they didn't like it when completed.