What does a caterer do in a restaurant? Specific? thank you

The caterer in this restaurant mainly pays attention to knife work ..! Let me tell you something popular ... that is, the waiter sends the menu ordered by the guests to the back hall ...! In addition to seafood, there is also a water table for slaughter ... Every dish on the menu requires everyone who caters to cut the raw materials used in this dish and repackage them ... and the quantity must be controlled ...! You can't cut more or less. You have to fry a piece of material. If you don't have a good knife maker, you don't have to talk about side dishes ... games, hotels ...! If you have any questions, you can ask me directly .. I have finished the patio!