(a) A director shall administer each division within the Agency. The commissioners, with the approval of the Secretary, shall appoint the directors for divisions that are part of a department, and the Secretary shall appoint any other directors. All directors shall be appointed subject to the provisions of section 14 of this act.
(b) Each division and its officers shall be under the direction and control of the appointing authority except with regard to judicial or quasi-judicial acts or duties vested in them by law.
(c) No rule or regulation may be issued by a director of a division without the approval of the appointing authority.