Except as otherwise provided in this Act, the Board of Directors shall look after, direct and manage all functions and affairs of the Corporation, subject to general direction by the Government of Nepal. Provided that Board of Directors may so delegate such duties and powers, out of the duties and powers set forth in this Act or the Rules framed under this Act as it deems necessary and appropriate to General Manager or a sub-committee consisting of one or more directors or other officers of the Corporation as to be performed and carried out by them.