Back in the days when I was a Customer service agent ( Ok, that was 18 years ago) we used to throw so many staff at the boarding gate. Two to pull boarding cards and two to board. One for under the wing and one for the steps.
It does seem crazy to allocate a max of two staff per gate, and dangerous, to boot.
Ok, everyones trying to cut corners, these days, to make dosh, but at what cost?
Although, when I was a load controller, it was the norm to dispatch 3 flights at a time, 1st thing. although they were usually all parked next to each other.
Used to be a great way to lose weight
Glad I'm behind a desk, these days. Good luck !