Mutli cam editing...

Cam 1 in video track.

Cam 2 in overlay track.

Sync the two video so using the sound as a guide (this is why movies use clapper boards that make a noise, editirs later sync the sound with the motion)

Start editing out from the overlay tracks, cutting out chunks to expose the video in the track below.

in the sections where you have remained two video tracks on top of each other...only the overlay track will be seen so no need to remove the video underneath. you will only be removing sections from the overlay track.

get it? ;)