Whenever conditions affecting the demand for and supply of money, the extension of credit or any other pertinent banking operations make such action necessary or desirable in the public interest, the commissioner may, by regulation adopted in accordance with chapter 54: (1) Establish a maximum rate of dividends or interest on deposits, certificates or accounts which may be paid by any one or more groups of Connecticut banks; (2) change or eliminate the reserve requirements against demand or time deposits of the United States government, but the amount of such reserve shall not be higher for such deposits than the then current reserve requirements against other demand or other time deposits; (3) change the reserve requirements against demand deposits other than those of the United States government to not less than twelve per cent nor more than twenty-four per cent of such deposits; (4) change the reserve requirements against time deposits other than those of the United States government to not less than five per cent nor more than ten per cent of such deposits; (5) provide that any part of the reserves required by it in excess of the statutory minimum may consist of net balances, subject to demand draft, with approved reserve agents.