When you reach level 24 and unlock the telephone you can then choose between three helpers. You can only select one of them. Note: The helpers do things automatically. They know what to do and when to do it.
HELPER - DESCRIPTION Cleaner - Picks up the checks and cleans the tables. Bartender - Gives drinks to people when they become impatient at their tables. Note: He is the most helpful helper. Singers - This posse will play music to entertain people in line.