Question How to switch which monitor I'm using mid-game ?

[toastedfsh]

i can't figure out how to switch to the application on my second monitor mid-game without minimising my game. I am also using gsync. also on my new Asus ROG Strix XG27ACS monitor I turned on HDR for that monitor in Windows settings and now I can't access colour settings or vivid pixel.
Is there any way around that ?