Section 20(1)(a) in The Andhra Pradesh Charitable and Hindu Religious Institutions and Endowments Act, 1987
(a)In the case of Charitable and Religious Institution or endowment for which a Board of Trustees is constituted under Section 15, the members of the Board of Trustees shall, within such period not exceeding sixty days and in such manner as may be prescribed, elect from amongst themselves, a chairman: and if no Chairman is so elected within the prescribed period the Government in the case of a Board of Trustees constituted under clause (a) of sub-section (1) of Section 15 and the Commissioner in the case of any other Board of Trustees shall nominate one of the members as Chairman.