Camera Selection in OBS
Follow these steps to add two cameras to OBS. Ensure that OBS detects your camera before adjusting Chrome settings.
Open OBS Studio.
In the Sources section, click the + icon and select Video Capture Device.
Once you select Video Capture Device, select Create new and click OK.
Select OBS Virtual Camera.
Click OK and OBS logo appears.
To add another camera, follow steps two and three then jump to step seven.
Select your second camera and click OK.
You will most likely have to resize the second camera to fit both screens.