Section 90B(6) in The Maharashtra Municipal Councils, Nagar Panchayats And Industrial Townships Act, 1965
(6)All such deposits and investments shall be made by the Chief Officer on behalf of the Council, with the sanction of the Standing Committee, and with the like sanction, the Chief Officer may at any time withdraw any deposits so made or dispose of any securities and re-deposit or re-invest the moneys so withdrawn or the proceeds of the disposal of the securities; but no order for making any such deposit or investment or withdrawal or disposal shall have any validity, unless the same be in writing signed by two persons specified for signing cheques.