Check out
There actually IS a dedicated check out spot in the Apple Store...look for the employee with an Apple bag on their back. Usually towards the back by the genius bar. They are there specifically for the purpose of ringing accessories/quick transactions. No, there is no big ass sign that says "CHECK OUT..." apple doesnt do that, it's not a department store or a best buy...
Having worked at Starbucks for many years, I know that I was often "zoned" to be in specific places at specific times. When I came into work and checked the daily schedule, I could see that I was supposed to work the espresso bar from 10-2, and then register #2 from 2-6. I imagine the Apple Store and other retailers work this way too...despite the customer's perception, there is actually an organized system behind the chaos.
So I am sympathetic to the fact that when an apple store guy says "i cant ring you out," or "i cant leave this spot," that it is because they are there for a reason. It's not because they are arrogant or whatever - people (customers) are self centered by nature, and they take it personally when they aren't getting help immediately, and they believe their situation to be unique. Rather than acknowledge that they are NOT in fact unique, and might just have to wait a few minutes, they say "oh this is just chaos, no one wants my business" as a defense mechanism.
anyway, sorry for my philosophical tirade on retail work...i spent maaaaany years contemplating this stuff believe me. glad to be out of it