> There should be a single entry queue that distributes to the multiple handlers.
Sure, that's more fair. But it also means everyone has to walk over to the queue entry. And often requires dedicated floorspace. If there's not good queuing discipline, it leads to larger gaps between customers at the registers and poor throughput. If there's a queue minder (which there probably should be in order to distribute people into subqueues), that person can steer customers to benefit their favorite register people: this was common at Fry's; register operators got a commission, so and some queue mindets would collude steer expensive carts to preferred registers.
Multiple independent queues works fairly well and avoids extensive coordination. Even if people don't like it.
Sure, that's more fair. But it also means everyone has to walk over to the queue entry. And often requires dedicated floorspace. If there's not good queuing discipline, it leads to larger gaps between customers at the registers and poor throughput. If there's a queue minder (which there probably should be in order to distribute people into subqueues), that person can steer customers to benefit their favorite register people: this was common at Fry's; register operators got a commission, so and some queue mindets would collude steer expensive carts to preferred registers.
Multiple independent queues works fairly well and avoids extensive coordination. Even if people don't like it.