New player

I’m new to the game, I recently unlocked bari and I’ve got 7 stands open and just built the second terminal. I can’t work out how to build advanced handling so I can build medium stands.
Any ideas?

First upgrade all your vehicles and buy the same amount of vehicles as gates. Then buy the stands.

You need to buy the advanced handling building. I Think it cost 5000?
Looks like a terminal but opens up for bygger planes :+1:

The vehicles as in the stairs, buses, fuel truck etc?