<s>[INST] Article 90 of Indian Constitution [/INST] Vacation and resignation of, and removal from, the office of Deputy Chairman A member holding office as Deputy chairman of the Council of States
(a) shall vacate his office if he cease to be a member of the Council;
(b) may at any time, by writing under his hand addressed to the Chairman, resign his office; and
(c) may be removed from his office by a resolution of the Council passed by a majority of all the then members of the Council: Provided that no resolution for the purpose of clause (c) shall be moved unless at least fourteen days notice has been given of the intention to move the resolution"
Article 91 of Indian Constitution,"Power of the Deputy chairman or other person to perform the duties of the office of, or to act as, Chairman
(1) While the office of Chairman is vacant, or during any period when the vice President is acting as, or discharging the functions of, President, the duties of the office shall be performed by the Deputy chairman, or, if the office of Deputy chairman is also vacant, by such member of the council of States as the President may appoint for the purpose
(2) During the absence of the chairman from any sitting of the council of States the Deputy chairman, or, if he is also absent, such person as may be determined by the rules of procedure of the council, or, if no such person is present, such other person as may be determined by the council, shall act as Chairman"," </s>