Each judge of the court of appeals may appoint a law clerk and also may appoint one (1) secretary or stenographer. The persons so appointed shall serve at the pleasure of the judge appointing them. Subject to the approval of the chief justice of the supreme court, the court of appeals may employ such other clerical personnel as may be necessary to carry out the duties and functions of the court. The compensation of all persons appointed or employed under this section shall be fixed in accordance with a pay plan adopted by the supreme court. Such pay plan shall contain a schedule of salary and wage ranges and steps designed for such purpose.