(1) The supreme court shall consist of not less than seven justices, who may sit en banc or in departments. In case said court shall sit in departments, each of said departments shall have full power and authority of said court in the determination of causes, the issuing of writs and the exercise of all powers authorized by this constitution, or provided by law, subject to the general control of the court sitting en banc, and such rules and regulations as the court may make, but no decision of any department shall become judgment of the court unless concurred in by at least three justices, and no case involving construction of the constitution of this state or of the United States shall be decided except by the court en banc. Upon request of the supreme court, the number of justices may be increased to no more than nine members whenever two­thirds of the members of each house of the general assembly concur therein.

  (2) The supreme court shall select a chief justice from its own membership to serve at the pleasure of a majority of the court, who shall be the executive head of the judicial system.

  (3) The supreme court shall appoint a court administrator and such other personnel as the court may deem necessary to aid the administration of the courts. Whenever the chief justice deems assignment of a judge necessary to the prompt disposition of judicial business, he may: (a) Assign any county judge, or retired county judge who consents, temporarily to perform judicial duties in any county court if otherwise qualified under section 18 of this article, or assign, as hereafter may be authorized by law, said judge to any other court; or (b) assign any district, probate, or juvenile judge, or retired justice or district, probate, or juvenile judge who consents, temporarily to perform judicial duties in any court. For each day of such temporary service a retired justice or judge shall receive compensation in an amount equal to 1/20 of the monthly salary then currently applicable to the judicial position in which the temporary service is rendered.

  (4) The chief justice shall appoint from the district judges of each judicial district a chief judge to serve at the pleasure of the chief justice. A chief judge shall receive no additional salary by reason of holding such position. Each chief judge shall have and exercise such administrative powers over all judges of all courts within his district as may be delegated to him by the chief justice.

As amended November 8, 1966 ­­ Effective January 17, 1967. (See Laws 1967, chapter 455.)