(a) Appointments and promotions to all positions in the classified service under the provisions of this act, and rules and regulations adopted as provided in Kan. Stat. Ann. §§ 75-3706 and amendments thereto, shall be made from among those certified to the appointing officer.

(b) A statewide list of requisitions to fill vacant positions shall be maintained by the division of personnel services.

(c) No person shall be appointed or employed under any class not appropriate to the duties performed, and no person shall be transferred to, nor assigned to perform the duties of, any position in the classified service, unless such person is qualified therefor under the provisions of this act.

(d) During the period of a national emergency, so proclaimed by the president of the United States, the director of personnel services, with the approval of the secretary of administration, may certify persons not so previously qualified to temporarily fill positions in the classified service in any agency, but no such temporary appointment shall continue after a qualified person is eligible for certification or after such national emergency ends, whichever period of time is the shorter.