I can't figure out how to create the multi-cpu / monitor setup pictured below. I have a 2x2 quad-screen setup with:

1) A main computer that displays on two 4K monitors (black below); and

2) Computers #2 and #3 that each display on a single 4K monitor (red & green screens respectively)

I want to be able to glide from the left 50% of cpu #1 up to red/cpu2, and from the right 50% of cpu #1 up to green/cpu3. (Even better would be able to go left/right back and forth between cpu's #2 and #3...)

I played with the Multiplicity "alignment settings" menu for each of the screens, but couldn't make this happen. Is it even possible?

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