I look at it and it seems the overlays do not 100% fit the BG so it’s about where you want it not where it belongs to.
For example the front counter on position 0 0 works for zone 1 and 2 but not for zone 3 - there it needs to be lower so it depends on which zones of the BG you are going to use
Do you want a front counter od the island atc…
This is not about setting it all but about picking what you want and set it on scene.
Honestly its weird but I believe it is created this way to alow to make more than just one BG from this with the overlay combination.