The Protection of Human Rights Act,1993
Section 7. Member to act as chairperson or to discharge his functions in certain circumstances
(1) In the event of the occurrence of any vacancy in the office of the chairperson by reason of his death, resignation or otherwise, the President may, by notification, authorise one of the Members to act as the Chairperson until the appointments 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, such one of the Member as the President may, by notification, authorise in this behalf, shall discharge the functions of the chairpersons until the date on which the Chairperson resumes his duties.