The chief justice of the Alaska Supreme Court is the administrative head of the Alaska court system. An administrative director is appointed by the chief justice with concurrence of the supreme court. The director supervises the administration of all courts in the state. Rules governing the administration of all courts and the rules of practice and procedure for civil and criminal cases are promulgated by the supreme court. The Alaska legislature may change the court's procedural rules by passing an act expressing its intent to do so by a two-thirds majority of both houses.