1. Fill in your name and address. The authorization letter acts as your permission to let someone else collect your documents on your behalf.An authorization letter is a formal document that grants someone else the authority to act on your behalf for specific tasks or responsibilities. Ensure that you specify the item or document being claimed. An authorisation letter is written to the bank's branch manager. Obtain Your Visa Document. Allow five business days from the time we receive your CPT application and documents in the ISSO Portal to issue your new I-20 with CPT authorization. NOTE: This form is used for Nationwide Permits. Access can be limited to certain documents or types of records. To drive using the Driver app, you are required to upload certain documents to get your account set up.