about 4 years ago - Avanya - Direct link
Originally posted by macluk: Maybe just grab the mod customize it and adjust to whatever amount of vans you want for your favourite building. You can change many other values in there as well.

This is probably the easiest and most flexible solution. Any post office can be what you want it to be. Here's the mod. :)

https://steamcommunity.com/sharedfiles/filedetails/?id=1806759255&searchtext=customize+it