(a) With the approval of the Governor, the Secretary shall appoint three deputy secretaries.
(b) The deputy secretaries:
(1) serve at the pleasure of the Secretary; and
(2) are entitled to the compensation provided in the State budget.
(c) The deputy secretaries have the duties delegated by the Secretary.
(d) The Secretary shall designate a deputy secretary to be the acting secretary when the Secretary is absent from the State or otherwise unavailable.