The Supreme Court shall consist of one Chief Justice and two Associate Justices. Any member of the Osage Nation, who is at least forty (40) years of age and duly licensed to practice law for no less than ten (10) years, is eligible for the office of Chief Justice. Anyone duly licensed to practice law for no less than five (5) years, is eligible for the office of Associate Justice. The Justices shall serve until their successors are duly appointed and installed.