A licensee may not display or allow to be displayed the agency license certificate at any location other than the principal office of the licensee, as specified in the certificate. A licensee may not display or allow to be displayed a branch office certificate at any location other than the branch office specified in the certificate. A licensee may not knowingly alter, deface, or destroy or knowingly allow the alteration, defacement, or destruction of an agency license certificate or branch office certificate.