3 projector setup projection mapping

Hello,
Hi ! I’m new to TD. I am sure my question is pretty simple for some of you :). I have been trying to figure out and find tutorials on how to do a projection mapping setup with 3 projectors. I want one image spread over the 3 projectors. If you have any tips on how to go about it/ how to use mutiple projectors, it would be greatly appreciated. I have only been able to setup 1 using Katan mapper…