(a) Each trial court may establish such job classifications and may appoint such trial court officers, deputies, assistants, and employees as are deemed necessary for the performance of the duties and the exercise of the powers conferred by law upon the trial court and its members.
(b) Each trial court may appoint an executive or administrative officer who shall hold office at the pleasure of the trial court and shall exercise such administrative powers and perform such other duties as may be required by the trial court. The executive or administrative officer has the authority of a clerk of the trial court. The trial court shall fix the qualifications of the executive or administrative officer and may delegate to him or her any administrative powers and duties required to be exercised by the trial court.