Challenges for cause, as provided by law, must be tried by the court. The challenged juror, and any other person, may be examined as a witness on the trial of the challenge. Whenever a juror is excused by the court in sustaining a challenge for cause, the clerk must immediately draw another name from the jury panel to fill the vacancy. There is no limit on the number of challenges that may be made for cause by any party, and it is not necessary for any co-parties to join in making a challenge for cause.
If more than one additional juror is called, each party is entitled to two peremptory challenges in addition to those otherwise allowed by law; but if only one additional juror is called, each party is entitled to one peremptory challenge in addition to those otherwise provided by law.
Id. Crim. R. 24