Here are some ways it can be used:
* To inquire about a rule or guideline: "Am I supposed to wear a tie to the meeting?"
* To ask for clarification about a task or responsibility: "Am I supposed to finish this report by tomorrow?"
* To express confusion or uncertainty: "Am I supposed to be here? I don't see my name on the list."
The meaning of "am I supposed to" depends on the context and the specific question being asked. However, it generally expresses the speaker's need for information or reassurance about what is expected of them.