Section 12(3)(a) in The Indian Statistical Institute Act, 1959
(a)where the order provides for any person or persons being in charge of the Institute-(i)all persons holding office as Members of the Council, including the Chairman, shall be deemed to have vacated their offices as such;(ii)the person or persons appointed under sub-section (2) to be in charge of the Institute shall exercise all the powers and perform all the duties of the Chairman or Council of the Institute, whether at a meeting or otherwise, in respect of the Institute;