Been having this issue in my new airport. The security posts are staffed and the zoning seems correct (getting the green display of how many entries/exists I have). Arriving passengers can leave into the baggage claim.
Maybe related, I have also issues with the baggage loaders. No staff is present there even though all the zones are marked properly
Wait, you do realize that large security checkpoints need 5 security staff per thing right?
I would have gone with medium ones, because they are smaller and only need 4 people
Ya so you would need 110 security staff to operate 22 large security checkpoints (Small security take 1 person per checkpoint (ppc for short) medium needs 4 ppc, and large needs 5 ppc)