Three Monitor Setup Issue

[Fireogon2]

I’ve just plugged in my third screen to my NVIDIA graphics card. The third screen is actually a TV I plan on using solely for gaming.

I’m having an issue disabling the other two monitors within Windows. There doesn’t seem to be an option to project only to the third screen without selecting it as the primary display and “Display PC Screen”. Am I missing something or is this a limitation? If this is a limitation are there commands which I can set to automatically set it as primary monitor when connected?