—(1) The seal of the Board shall be kept in the custody of the Secretary of the Board.
(2) The seal shall be affixed in the presence of the Chairman and the Secretary of the Board who shall sign as witnesses:
Provided that, in the absence of the Chairman or the Secretary of the Board or both, the seal shall be affixed in the presence of a member or members of the Board, as the case may be, who has or have been authorised in that behalf by the Board, and such member or members shall sign as witnesses.
(3) The following documents shall be executed under the corporate seal of the Board:
documents requiring registration under any written law;
documents authorising any person to act for any particular purpose on behalf of the Board; and
such other documents or classes of documents as the Minister may from time to time direct.