(a) A person who signs an application for someone else will be required to provide evidence of his or her authority to sign the application for the person claiming benefits under the following rules:
(1) If the person who signs is a court appointed representative, he or she must submit a certificate issued by the court showing authority to act for the claimant.
(2) If the person who signs is not a court appointed representative, he or she must submit a statement describing his or her relationship to the claimant. The statement must also describe the extent to which the person is responsible for the care of the claimant. This latter information will not be requested if the application is signed by a parent for a child with whom he or she is living.
(3) If the person who signs is the manager or principal officer of an institution which is responsible for the care of the claimant, he or she must submit a statement indicating the person's position of responsibility at the institution.
(b) We may, at any time, require additional evidence to establish the authority of a person to sign an application for someone else.