Acting President and Chairperson of Tribunal or Appellate Tribunal.

    (1) In the event of the occurrence of any vacancy in the office of the President or the Chairperson by reason of his death, resignation or otherwise, the senior-most Member shall act as the President or the Chairperson, as the case may be, until the date on which a new President or Chairperson appointed in accordance with the provisions of this Act to fill such vacancy enters upon his office.
     (2) When the President or the Chairperson is unable to discharge his functions owing to absence, illness or any other cause, the senior-most Member shall discharge the functions of the President or the Chairperson, as the case may be, until the date on which the President or the Chairperson resumes his duties.