No commission shall be issued to an individual who has not made written application to the secretary, on forms developed by the secretary. No person under the age of twenty-one shall be commissioned as an auxiliary agent. Each applicant shall be required to complete the following:
(1) An extensive background investigation performed by the department which, at the very least, shall assure that no commission is issued to an individual who was ever convicted of a felony, a misdemeanor, or any wildlife or fishery violation.
(2) A written examination designed to show competency in general knowledge matters and a basic understanding of wildlife and fisheries.
(3) Any other requirements the secretary may adopt by rule and regulation.