22. An attorney who wishes to cease representing a party must so advise his client, together with the other party or his attorney if he is represented.
Furthermore, any attorney who wishes to cease representing a party within the 10 days preceding the date fixed for the hearing of the appeal must obtain the authorization of a judge to do so, and to this end must serve upon his client, upon the opposing party or his attorney if he is represented, and upon the clerk an application setting out the reasons, with one clear day’s notice of presentation.