Upon the completion of the initial surveys required by subsection (a) of this section, the Director shall report to the district courts, the councils, and the conference his recommendations concerning the number of full-time magistrates and part-time magistrates, their respective locations, and the amount of their respective salaries under
section 634 of this title. The district courts shall advise their respective councils, stating their recommendations and the reasons therefor; the councils shall advise the conference, stating their recommendations and the reasons therefor, and shall also report to the conference the recommendations of the district courts. The conference shall determine, in the light of the recommendations of the Director, the district courts, and the councils, the number of full-time United States magistrates and part-time United States magistrates, the locations at which they shall serve, and their respective salaries. Such determinations shall take effect in each judicial district at such time as the district court for such judicial district shall determine, but in no event later than one year after they are promulgated.