(1) The general rule is that a witness summons is binding only if it is served at least 14 days before the date on which the witness is required to attend before the court or tribunal.
(2) The court may direct that a witness summons shall be binding although it will be served less than 14 days before the date on which the witness is required to attend before the court or tribunal.
(3) An application under paragraph (2) may be made without notice but must be supported by evidence on affidavit.
(4) A witness summons which —
(a) is served in accordance with this rule; and
(b) requires the witness to attend court to give evidence,
is binding until the conclusion of the hearing at which the attendance of the witness is required.