recording settings on Windows 10 dell pc

I need help with recording settings.  I want my recording to show all participants - mobile & pc, all on one recorded screen all the time.  I keep getting only the speaker showing up on the recording but I need to see all 3 participants.  I thought I had the setting on "Gallery View" but only the speaker shows up.  I am not tech savy and have spent hours trying to figure it out.  I have windows 10 on a Dell Inspiron Laptop PC and my zoom is up to date.

Thx.