From among the members of the Commission, the Governor shall appoint a chairman. The Chairman is the administrative and executive head of the Commission. Subject to paragraph (3) of this subsection, the Chairman has final authority over: the administrative work of the Commission and its employees; and the assignment of cases for hearing. The Chairman does not have final authority over: the adoption of regulations by the Commission; or the conduct of hearings and the determination of cases by the other members of the Commission. The Chairman shall conduct hearings unless the hearings interfere with the adequate and efficient performance of the administrative and executive functions of the Chairman.