V-800HD MK II: How to Organize your Inputs Using Cross-Point Assign
Cross-Points can be difficult to configure at first, as you are internally swapping the routing of video sources, so it's easy to mix them up. But it's an incredibly useful tool for getting the multi-view sources to be organized the way you want them to.
For example, you may have 3 SDI cameras connected and a 4th HDMI to DVI camera, and you want to have it be the 4th box on your multi-view output. Assuming it is connected to input 5, you would swap XPT 4 and XPT 5.