Sales (that is, those who are responsible for booking tables, usually you have to contact a salesperson before you go. Atmosphere group (the members of the atmosphere group are usually the people who dance the most on the dance floor and dance all night) DJ (the person who puts the disc on the stage) MC (the person who sings and shouts beside the disc) Lighting (the person who is responsible for adjusting the lighting in the dark) Welcome guests (the person who greets you at the door) Dance teacher (the person who is responsible for the training of the stage department). Cleaning (sweeping the floor), bartender (responsible for mixing your wine), bartender (paid to accompany you to drink and chat), security guard (needless to say, responsible for security issues and security inspection at the door) and department managers (managing various departments). (Generally, top 100 DJs or foreign guests are often invited to nightclubs, and translators are used. ) I'm not a professional either, but I often go to play for reference only.