15. (1) The meetings of the Board shall be held at such times, and at such places, as may be prescribed by regulations:
Provided that a meeting may also be otherwise convened by the Chairman when he so thinks fit.
(2) To constitute a quorum at a meeting of the Board not less than [five] Directors including the Chairman shall be present:
Provided that no quorum shall be necessary for a meeting previously adjourned for want of quorum or in the case of a meeting certified by the Chairman to be urgent.
(3) Each Director, including the Chairman, shall have one vote, and in the event of an equality of votes, the Chairman shall have a casting or a second vote.
(4) If, for any reason, the Chairman is unable to preside over a meeting, it shall be presided over by a Director nominated by the Chairman for the purpose, and in default of such nomination, by such Director as the Directors present may choose.