1. The director may, by regulation, classify licenses to be issued under sections 281.010 to 281.115. Such classifications may include but not be limited to commercial applicators, noncommercial applicators, private applicators, provisional private applicators, public operators, pesticide technicians, or noncertified RUP applicators. Separate classifications may be specified as to ground, aerial, or manual methods used by any licensee to apply pesticides or to the use of pesticides for the control of pests.

2. The director may, by regulation, establish certification categories to be provided under each license classification. Each certification category shall be subject to separate testing procedures and requirements; provided, that no individual shall be required to pay an additional fee if the individual is certified in one or all of the certification categories provided under the license for which the individual has applied. The director may, by regulation, establish certification categories limited to the use of certain pesticides and issue a license therefor. Each certification category shall be subject to separate testing procedures covering only those pesticides for which the applicant seeks to be licensed.

3. The director may by regulation establish fees for identification documents.