Here's what I mean when I say they won't ring up a customer: I've selected the employee and given him or her the task of ringing up customers (and it should work because if you try to select that option again, it's grayed out.) Now, I have three customers who have blue shopping carts above their heads, and I got notices from each one saying "I'm ready to check out when you get a chance to ring me up!" I've gone to the first one myself, and start ringing them up. I would then expect the employee to ring up one of the other two that are still waiting. But they don't. They either continue cleaning, or chatting with potential customers or just standing there. Meanwhile, the other two customers get tired of waiting because it's taking me so long to ring up the first. Their shopping carts go from blue to red and then vanish entirely and they leave the store. (I understand there are retail perks to make the ringing up process go faster, but those perks have to be earned and it's more frustrating than fun.)