Audio Selecting output audio device

I am working on a project. And I'm struggling with this audio issue. I have one PC and multiple monitors connected to the PC with HDMI. The PC has to run multiple Unity games at the same time which are the same program, but multiple processes. And the different processes are showing in the different monitors. But all the audio devices(the HDMI monitors) play all the sounds from the multiple processes because they run on the same PC. Is there a way to select a certain audio device to play audio?

Any help will be really helpful for me.