https://www.jotform.com/form-templates/third-party-authorization-form
Third Party Authorization Form Template | Jotform
A Third Party Authorization Form is a form template designed to give an individual or entity power of attorney over an account
third party authorizationform templatejotform
https://www.canada.ca/en/revenue-agency/services/forms-publications/forms/gst507.html
GST507 Third-Party Authorization and Cancellation of Authorization for GST/HST Rebates - Canada.ca
Use this form to authorize a person to represent you as a claimant for GST/HST rebates.
third party authorization