Before we begin filming, we have to produce a shooting schedule. This is basically the order in which we will film our preliminary task. To save money, when people are filming bigger movies, they will not record the film in the order it's shown. They will film all the scenes that are required to be in that area. Hence why in our sequence, we are filming scenes 3, 4, 5 first.
We will do this so we do not next to keep going back a forth between locations, we can complete every scene in that location and edit it all together.