1: 1 and 2 are the primary and the secondary images. In my cab, the 1st image is the video and the 2nd image is the title screen. 2: You can add other images using GameExtender on a second monitor, but the themes are limited to 2 at a time. For MAME, 1 shows the video and 2 shows the cab's 3D model. 3: Yes, there is a way to enable custom emulator layouts in the Theme Editor. I don't personally use it so I don't know how it works, sorry. 4: Again, it's not a feature I'm all that familiar with, but Drac may know this. 5: This is theme specific also. You can set where you want the popup to display using Theme Editor.