If you have any ideas and creativity about developing the office and its map, you can fork it from GitHub 
and if you have programming knowledge, you can even start developing with the help of artificial intelligence.

I tried to keep the code clean and readable as much as I could.

I will also put the Ymap project file here, if anyone can improve it with codewalker.

Note:
Just don't place objects or people in the taxi spawn location.