Apple - Multiple video track layers in iMovie?

You can't really do this in iMovie as it is limited to 2 video tracks. You can do it in Final Cut or Premiere Pro if you're willing to spend the money, or HitFilm Express if you want don't want to spend a penny.

I had the same problem and I found a solution, a bit like the old days when recording a tape:

• create your 2 camera angle video then bounce them into a new timeline in a new project and finaly add the third camera to the extra timeline in that new project,

or

• alternatively create 2 separate files, both with 2 camera angle videos, and bounce them into a third new file in order to have 2 timelines with 2 cameras on each and edit them to one final video with 4 camera angles,

Hope that makes sense!