Therefore, if you want to send the exempt mail to the designated office, you need to determine the recipient's office address and write the address on the letter. In addition, you can also indicate on the cover or attached letter that the letter should be sent to the person in charge of the office or relevant staff.
Please note that different schools may have different rules and procedures, so it is best to confirm with the recipient's college or institute before sending the exemption email to ensure that you send the exemption email in the right way.