Yeah, I already mentioned having an overview, so really managing people, managing everything, you need to be able to multitask, so you have to deal with lots of things at a time, so how many people are coming, how many are leaving, what's the staff doing, so the people that you have to give the tasks to, are the tasks okay, how do they interact with each other, is everything working, are the people staying, do they have a room, is the room free, is the room cleaned, what food do we offer the next weeks, what do we have to buy for that, the social activities maybe that the hotel offers, so there's a lot, there are lots of things that you have to keep in mind at a time, I think that's really the most difficult thing and that's really the skill that you need when you're a manager.