hello I am new here and I need help with this for my school project. I need to know if you can do "video overlays"...

Here is my attempt at explaining what I want:
I filmed the same scene twice with a stationary camera, with the target in two different positions (on the right side one time and on the left side another time) I want to put the two videos together. Kind of like in photoshop with layers.. I want to cut half of the film off of one side.... please help me :(