i used the steam-link app to do this.
just add viewer to none steam game and activate click to walk in viewer works perfect for home use. (for if u dont feel like sitting behind pc or if u need to keep eye on something in game as admin)
and is free.
https://store.steampowered.com..../app/353380/Steam_Li
https://play.google.com/store/....apps/details?id=com.
https://apps.apple.com/us/app/....steam-link/id1246969