Take a look at this IATA publication if you're interested in reading. It goes in some depth about typical checkpoints and their various queue configurations.
These concepts transfer to customs/immigration halls in that screening is performed, but officers are looking for things other than threats to aviation security. At my airport's main customs hall (yes there is customs hall for international-to-international airside transfer), there are several queues depending on what travel document one holds:
- foreign passports
- trusted traveler
- connecting domestic flight (inclusive all of above)
- uniformed flight crew + diplomatic passports + passengers escorted by airline (i.e. UM, disabilities)
These feed into an alternate set of booths that offer translation service.
Ideally passengers escorted by airline should get dedicated queue-jump access into an inspection booth that can also serve another queue (to save manpower), but is still accessible by golf carts. At my airport - depending on the time of arriving flights, this booth can be idle or have a huge lineup despite one of its purposes to expediently process aircrew. Who knew everyone gets off the same plane at the same time?
I feel prompted to make a new in-depth thread about some concepts that can be brought into the game...