20.—(1) The tribunal must determine the procedure at a hearing and, insofar as it is set out in these Rules, must determine it in accordance with these Rules.
(2) The tribunal may proceed with the hearing in the absence of either party, whether represented or not, if it appears to be just and proper to do so, and may adjourn it from time to time if it appears necessary to do so.
(3) Unless the tribunal determines otherwise, the evidence adduced by the appellant must be given first.
(4) Witnesses giving evidence at the hearing may be subject to questioning and cross-questioning.
(5) Any question as to whether any evidence is admissible, or whether any question should or should not be put to a witness, must be determined by the tribunal.
(6) A verbatim record of the evidence given at the hearing must be taken; and the relevant person and, where functions have been delegated under rule 7, the relevant local policing body, must keep that record for a period of at least two years beginning with the day after the date of the end of the hearing.