"As no reply has been received to our letter of28 January 1998 , a Chairman has instructed that this case be listed as Appearance Not Entered.
"1 You are responsible for ensuring that all the witnesses ... can attend on the hearing date.
"A Respondent shall, within 21 days of receiving the copy of the Originating Application enter an appearance to the proceedings by presenting to the Secretary a written Notice of Appearance."
"A respondent who has not entered an appearance shall not be entitled to take any part in the proceedings except ..."