6.—(1) A party may act in person or be represented by a person appointed by them in connection with anything that these Regulations require or permit them to do.
(2) Where a representative begins to act for a party, the representative must immediately notify the committee and the other party or parties of that fact.
(3) Where a representative ceases to act for a party, the representative or the party must immediately notify the committee and the other party or parties of that fact, and of the name and address of any new representative (if known).
(4) Notification under paragraphs (2) and (3) may be given orally at a hearing to the committee and to any other party present, but must otherwise be given in writing.
(5) If the committee is satisfied that there is a good reason to do so, it may refuse to permit a particular person to assist or represent a party at a hearing.