(1) The powers of the commission, enumerated in this act, which are not specifically and exclusively reserved to the commission by the act, shall be vested in, and exercised and administered by a liquor control business manager, who shall be selected by and responsible to the commission, and whose position shall be in the state classified civil service. The powers of the commission enumerated in, and provided for by this act, shall be exercised in conformity with the provisions of the act pertaining to the duties of the liquor control manager, except that the commission shall exclusively exercise the power to make rules and regulations under the act to regulate the control of the alcoholic beverage traffic within the state; to hear and decide all cases of violation of the provisions of the act and regulations thereunder; to employ a liquor control business manager as provided for by the act; and to hear and decide all public appeals from the administrative decisions of the liquor control business manager.

    (2) The liquor control business manager shall be and shall serve as the business manager of the commission, and, as such, it shall be his or her duty and responsibility to manage the business affairs of the commission relative to purchasing, merchandising, warehousing, rationing, distributing, inspecting, investigating, licensing, and accounting, in accordance with policies established by the commission and in compliance with the provisions of this act and with the rules and regulations adopted thereunder. In addition to the foregoing, the business manager shall be exclusively responsible for the assigning, training, and supervision of all commission classified employees.