13.—(1) Where an appellant wishes to call any person to attend a hearing to give evidence at it, he, she or, as the case may be, it shall send written notification to the Authority no later than 2 weeks before the hearing of the name, address and occupation of the person and of what the general nature of his or her evidence is likely to be.
(2) The person appointed to chair the appeals committee may refuse to permit such a person to attend the hearing to give evidence at it if he or she is satisfied that there are good and sufficient reasons for doing so; and in such an event the Authority shall send the appellant written notification of the refusal and of the reasons for it.
(3) The Authority shall notify the appellant in writing, no later than 2 weeks before the hearing, of the name, address and occupation of any person whom the appeals committee wishes to call to attend a hearing to give evidence at it, and of what the general nature of his or her evidence is likely to be.