Sebastian just laughs at that, not really amused by Kurt's snaps, but it's amusing that he tries. He just points towards the back of the shop, the door clearly labelled "Manager". He can only assume that Kurt is here about one of their vacancies, so it's safe to assume that they are going to be working together in the future. Great "Knock yourself out. Remember to knock, she gets mad when you don't" he says with a smirk, and returns to his book.