The procedure of the Trustees at their meetings and otherwise shall be such as may be prescribed.

At any meeting of the Trustees three members shall constitute a quorum.

At every meeting of the Trustees, the Chairman of the Trustees, if present, shall be the chairman of the meeting; and, if he is absent, such member of the Trustees as the members then present may choose shall be the chairman of the meeting.

The chairman of a meeting of the Trustees shall have a second or casting vote.

The Trustees may act notwithstanding a vacancy in their membership.