As you can see, there are multiple ways to go about this. Unfortunately, there are multiple ways to go about this. 
Anne Rainbow thinks differently, and has come up with a binder structure here: Binder new novel. I follow it somewhat, by that I mean I use parts and not others (yet?), but the structure is there in case I ever need it. This is what mine looks like:
This way, I can lock one side of the split screen and work on the documents in the other like so:
