How to record multiple camera views

Hi. Im looking for assistance with recording locally.
I’m a pianist and had an online piano lesson with my overseas teacher. My setup:

- laptop (audio) sitting at the side of the piano to show my teacher my posture and seat.

- iPad (no audio connected) on my piano so I can see my teacher without turning my head. 
My teacher switches 2 camera views; side and overhead camera.

I recorded my lesson to my laptop, however when watching back the recording back, it only shows me, not my teacher demonstrating on her piano.

How do I set things up so she can still see me but my recording shows views of us both? I need to see when she demonstrates something on her piano.  Can zoom automatically switch views when recording? We are both using the free platform. Thanks. Andrew