| (4) | It shall not be necessary for any person to file a power of attorney to act, but the authority of any person acting for a party may be challenged by the other party within 10 days after he or she has noticed that such person is so acting or with the leave of the Appeal Committee on good cause shown at any time before judgment and thereupon such person may not, without the leave of the Appeal, so act further until he or she has satisfied the Appeal Committee that he or she has authority so to act and the Appeal Committee may adjourn the hearing to enable him or her to do so. |