52.—(1) Subject to the provisions of these regulations, the panel conducting the hearing shall determine their own procedures.
(2) The panel conducting the hearing shall review the facts of the case and decide whether or not the conduct of the designated person concerned met the appropriate standard.
(3) The panel conducting the hearing shall not find that the conduct of the designated person concerned failed to meet the appropriate standard unless the conduct is—
(a)admitted by the designated person concerned; or
(b)proved by the presenting officer on the balance of probabilities, to have failed to meet that standard.
(4) Where evidence is given that the designated person concerned, while subject to investigation—
(a)after having been given in writing the caution set out in paragraph 1 of Schedule 2, failed to mention any fact relied on in his defence at the hearing, being a fact which in the circumstances existing at the time he could reasonably have been expected to mention during the investigation, or
(b)after having been given in writing the caution set out in paragraph 2 of Schedule 2, failed or refused to account for any object, substance or mark, or
(c)after having been given in writing the caution set out in paragraph 3 of Schedule 2, failed or refused to account for his presence at a particular place,
the panel conducting the hearing may draw such inferences from the failure or refusal as appear proper.