Setting up projectors

Where is the most detailed guide for setting up projectors? I have 4 projecters in my club and I (of course) want to get the most area output I can. We had Deadmau5 headling and his crew came in spent 15 minutes looking at the room then left for a month and came back with the room pefectly mapped. They even had room details set as projection zones. Can I map using CAD files?
 
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