There is created the Advisory Council for Probation, to be composed of one superior court judge from each of the judicial administrative districts. The district council for each judicial administrative district shall select a superior court judge who shall be each respective district's member of the council. The initial terms of office of the council members shall be as follows: Districts 1 through 3, one year; Districts 4 through 6, two years; Districts 7 through 10, three years. Thereafter, all successors to the initial members of the council shall serve for terms of office of three years. Members of the advisory council shall be selected by the district councils, meeting in caucus called for such purpose by the administrative judge of each district.