Section 21-409 - Duties of court; examination; charge; advice; appointment of foremanA. When a grand jury is summoned and appears, the court and the county attorney or other prosecuting officer shall examine the jurors regarding their qualifications as such jurors.B. After the grand jury has been sworn and impanelled the court on advice of the county attorney shall charge it concerning the matters that may be considered by it and concerning the duties of the grand jurors in respect thereto.C. On request of the grand jury, the court shall advise that body at all reasonable times regarding their legal duties.D. When the grand jury is sworn and impanelled, the court shall appoint one of the jurors to be foreman, and another juror to act as foreman in the absence of such foreman.