Show Digital Signage on 1 display for PC that has multiple displays

I have a TV in my office that is currently set up as a 3rd monitor for my PC.  I would like to use it as a digital signage, so I installed zoom rooms on my PC and set it up as a digital signage only location.  The problem is when starting the zoom room, it takes up all 3 displays. 

Is there a way to only have the digital signage display on 1 display?