Upon accreditation of an association of producers, at least two members of bargaining teams from both the association and the handler named in the application must attend instructional classes covering negotiation, mediation, arbitration, and facilitation approved by the commissioner. The instruction period must be at least three hours. The informational exchanges may not commence unless certificates of completion are on file with the commissioner. After an association has been accredited for a period exceeding one year, the association and the handler must have at least one member of their bargaining team in informational exchanges or negotiations complete training in the previous year of at least three hours in negotiation, mediation, arbitration, and facilitation, as described in this section, before the dates for informational exchanges are determined. Verification of training must accompany the notification to the commissioner that informational exchanges are scheduled.