(1) The grand jury shall consist of not fewer than 15 nor more than 21 persons. The provisions of law governing the qualifications, disqualifications, excusals, drawing, summoning, supplying deficiencies, compensation, and procurement of petit jurors apply to grand jurors. In addition, an elected public official is not eligible for service on a grand jury.
(2) The chief judge of any circuit court may provide for the replacement of any grand juror who, for good cause, is unable to complete the term of the grand jury. Such replacement shall be made by appropriate order of the chief judge from the list of prospective jurors from which the grand juror to be replaced was selected.
(3) The chief judge of any circuit court may dispense with the convening of the grand jury at any term of court by filing a written order with the clerk of court directing that a grand jury not be summoned.