I have a setup where I have 4 monitors - windows 11.

1st is my primary display (DP)
2nd is a secondary display which echos the first when clients need to see what I'm doing. (HDMI)
3rd is a portrait mode (flipped) that I want to use for a private display (displaylink USB)
4th is my signature terminal. (displaylink+signature software USB)

the 1st will flip between native resolution (32:9 format) and the native resolution of the 2nd (16:9) depending on if 2 is on.

The others two I'd like to leave on full time.

I would like all windows except for the ones on the private display (let's call them app X and app y) to be forced to the 1st monitor consistantly. Currently, they randomly plop onto other monitors once #2 goes away or comes in.

I'm not sure how to do this.

Also, it seems the numbering of the monitors is somewhat random. Sometimes Display fusion shows #2 as #1 and #1 as #2 - if there's a way to specify the numbering that would be great.

Thanks!