If the application for permit or other qualifying documents are signed by an attorney in fact for an individual, partnership, association, company, or corporation, or by one of the partners for a partnership, or by an officer of an association or company, or, in the case of a corporation, by an officer or other person not authorized to sign by the corporate documents described in § 44.83, power of attorney conferring authority upon the person signing the documents shall be manifested on Form 5000.8 in accordance with its instructions.