OBS-Studio streaming from one VM to another or 2 other VM apps?

So i need on one monitor one qub for me.
One monitor for streaming to OBS, but i need not to see OBS or panel.
I can get one VM with OBS and stream with it, but how to change stream to start working from another VM with OBS?
That i have one VM app open that is streamed and then i show also other VM app to compare from third VM that has OBS open?
Maybe one VM with OBS and 2 VM to be able to seenable by obs?

Not possible… Vm’s are isolated
One vm doesn’t know what other vm is doing and that’s for a specific reason…

If one vm is seeing or able to access other vm that’s a HUGE security issue in qubes