22. Section 43 of the Principal Act is amended by inserting after subsection (5) the following subsection:
“(5A) The Tribunal may direct that a person shall cease to be a party to a proceeding if the person fails to comply with a direction of the Tribunal within the time specified by the Tribunal or, if no time is specified, within a reasonable time, unless—
(a) the person is the person who made the decision being reviewed; or
(b) the only other party to the proceeding is the person who made the decision.”.