At the time provided by law for the drawing of jurors, the jury commissioners shall randomly withdraw from the jury box one capsule or container for each juror required by law to be drawn. The jury commissioners shall then open each capsule or container drawn and ascertain the number contained therein. The names of the jurors drawn must be taken from the jury list by the numbers thereon corresponding to the numbers drawn from the capsules or containers. The jury commissioners may not excuse or disqualify any juror selected. Immediately after the jurors are drawn, the clerk of court shall issue his writ and process as now required by law for the jurors whose numbers were drawn. Any juror drawn for a term of court must be notified of the time and place he is to appear for jury duty at least fifteen days before he is to appear and serve as a juror. If the trial judge determines that additional jurors are immediately necessary for the conduct of the court he may waive the fifteen-day notice.