If you check the close up construction cam you can see them using a pole. This is the story pole. They use this to make sure the brick courses are at the same level around the building. The masons you see in the camera are the most experienced masons on the project and they are the ones that establish the eventual appearance of the project.
The brick veneer is not structural in that it is not holding up the building nor is it adding strength. It is a water proof cladding and it needs to look good.