a. Notice of Appearance. At his or her first appearance in any court on behalf of a defendant, an attorney, whether privately retained or appointed by the court, shall file a notice of appearance on a form provided by the clerk of the court.
b. Duty of Continuing Representation. Counsel representing a defendant at any stage shall continue to represent him or her in all further proceedings in the trial court, including filing of notice of appeal, unless the court permits him or her to withdraw.
c. Duty Upon Withdrawal. No attorney shall be permitted to withdraw after a case has been set for trial except upon motion accompanied by the name and address of another attorney, together with a signed statement by the substituting attorney that he or she is advised of the trial date and will be prepared for trial. Appointed counsel may withdraw after the arraignment on the grounds of his or her client's ineligibility only upon a showing that withdrawal will not disrupt the orderly processing of the case.