(1) In the event of occurrence of any vacancy in the office of the Chairperson by reason of his death, resignation or otherwise, the President may, by notification, authorise the senior-most Member to act as the Chairperson until the appointment of a new Chairperson to fill such vacancy.
     (2) When the Chairperson is unable to discharge his functions owing to absence on leave or otherwise, the senior-most Member available, as the President may, by notification, authorise in this behalf, shall discharge the functions of the Chairperson until the date on which the Chairperson resumes his duties.