A more thorough explanation:

fiat ut petitur

When someone asks for something, and it is granted, we say "fiat ut petitur." It means "let it be done as it is asked." This is an order that gives permission to do what was requested.

• A student asks their teacher if they can turn in their homework late. The teacher says "fiat ut petitur" and allows the student to turn it in the next day.
• A person asks their boss for a day off work. The boss says "fiat ut petitur" and approves the request.

These examples show how "fiat ut petitur" is used to grant a request or give permission to do something. It is a way of saying "yes" to what someone has asked for.