i don't think this is for explaining a film i think it may be for making the film...
but don't quote me on it
No, I'm pretty sure from my recollection of the film, that the posted diagram is an attempt to explain the narrative of the film.
It involves people getting into a box/room and travelling through time. At one point there are a number of timelines all running concurrently in the movie.
Although I could be wrong, the movie was incredibly complicated and difficult to follow. I'm not sure I could follow the film even with the timeline.