a. Summons. Grand jurors shall be summoned and impaneled as provided by law.
b. Voir Dire. The examination of prospective grand jurors shall include, but need not be limited to, inquiries to determine that a juror is a qualified elector of the county in which the grand jury is to sit and that the juror will act impartially and without prejudice.
c. Oath. Each juror shall take the following oath:
I swear (or affirm) that I will give careful attention to the proceedings, abide by the court's instructions, and decide matters placed before the grand jury in accordance with the law and evidence presented to me (so help me God).
d. Instructions. The court shall inform the grand jurors:
(1) Of their duty to be present at each session of the grand jury;
(2) Of their duty to inquire into every offense presented pursuant to law;
(3) Of the duty of each grand juror to disqualify himself or herself in a particular matter of any of the reasons enumerated in Rule 12.2;
(4) Of their duty to return an indictment only if they are convinced that there is probable cause to believe that an offense has been committed and that the person under investigation committed it;
(5) Of their right to request the presentation of additional evidence by the prosecutor; and
(6) Of those grand jury matters which are confidential and the penalties for wrongful disclosure thereof.