4. Safe custody and affixing common seal
(1) The Director or, in his absence, the Administrative Officer shall keep the common seal in safe custody.
(2) The common seal shall not be affixed to a document unless ¾
(a) the Board has directed by a resolution at one of its regular meetings that the common seal be affixed to the document; and
(b) the common seal is affixed to the document by the Director or, in his absence, the Administrative Officer in the presence of the chairman or, in his absence, one of the other members of the Board.