(1) If the physical or mental condition of a party is relevant to a proceeding, the Tribunal may direct the party to submit to a medical, psychological or other examination by an expert whom another party proposes to call as a witness or otherwise as the Tribunal directs.
(2) The Tribunal may only make a direction under subrule (1) if satisfied—
(a) that the examination is reasonably necessary in the interests of justice; and
(b) that there are no less restrictive means available to determine the party's physical or mental condition.