You're in charge of a party, the customers want to dance, chat, eat and drink. Take care of them and don't let them leave! Remember that the time runs out, and that you have to earn at least the bronze star (but it's better if you get the argent or golden star) to pass to the next level.
When a visitor arrives, drag and drop him to an empty place where there's a cushion with the same color he has in his head; the client will ask for a dish, then click on it and then in the client to deliver it. When he leaves the dish is empty, click at it and then click the trash can to clear the table. It's the same procedure if you have to serve a drink. There's also chat zones on the carpet; if your customer wants to chat, drag and drop him to the corresponding zone. If other customers want to chat, move them to the same zone. There's 2 carpets to chat, and each chat can last up to 4 minutes. Sometimes the clients want to dance: you have then to drag and drop them to the dance floor.