the skill certificate is only an unnecessary item for your promotion.
If you pass the examination, you are only a waiter without management skills.
A certificate does not mean management skills.
If you want to be promoted, I suggest that you learn more about management and major, but I have my own professional certificate for senior waiters, so I don't have much chance to use it when I get promoted.
The guest room is a little tired, but simple, whether it's working hours, rest and dining. In the most popular words, it's a little off work.