if no such period has been fixed, after the expiry of thirty days from the date he or she gives such notice or after the expiry of such other period of notice as the member and the Minister may agree. (2) A member of the Board shall be deemed to have resigned his or her office and the member’s office shall become vacant— (a) if he or she becomes disqualified for appointment to the Board concerned in terms of paragraph (a), (b), (c), (d) or (e) of subparagraph (1) of paragraph 2; or (b) on the date he or she begins to serve a sentence of imprisonment, whether or not any portion was suspended, imposed without the option of a fine— (i) in Zimbabwe, in respect of an offence; or (ii) outside Zimbabwe, in respect of conduct which, if committed in Zimbabwe, would have constituted an offence. Dismissal of members 5.(1) Subject to subparagraph (2), if the Minister is satisfied on reasonable grounds that— (a) the Board has contravened this Act or any other law and has failed to rectify the contravention within a specified period after being requested to do so by the Minister; or (b) the Board has failed to comply with any direction in terms of section 8; or (c) whether through disagreements among its members or otherwise, the Board is unable to carry out its function in terms of this Act; and that it is in the national interest to do so, the Minister may, by written notice to the Executive Chairperson or chairperson, as the case may be, dismiss all members and their offices shall become vacant as soon as the chairperson receives the notice. (2) Before dismissing all members of the Health Service Board in terms of subparagraph (1), the Minister shall consult the President and act in accordance with any directions the President may give him. Filling of vacancies on Board 6. On the death of or the vacation of office by a member, the Minister shall fill the vacancy within three months. Procedure of Board 7.(1) Subject to subparagraph (2), the Board shall meet at such dates, times and places as may be fixed by the chairperson: Provided that the Board shall meet at least once every three months. (2) The chairperson of the Board— (a) may convene a special meeting of the Board at any time; and (b) shall convene a special meeting of the Board on the written request of the Minister or not fewer than two members, which meeting shall be convened for a date not sooner than seven days and not later than thirty days after the chairperson’s receipt of the request. (3) Written notice of a special meeting convened in terms of subparagraph (2) shall be sent to each member not later than forty-eight hours before the meeting and shall specify the business for which the meeting has been convened: Provided that a failure by a member to receive such a notice, or an inadvertent failure to send such a notice to a member, shall not invalidate the meeting. (4) No business shall be discussed at a special meeting convened in terms of subparagraph (2) other than— (a) such business as may be determined by the chairperson of the Board, where he or she convened the meeting in terms of paragraph (a) of subparagraph (2); or (b) the business specified in the request for the meeting, where the chairperson of the Board, convened the meeting in terms of paragraph (b) of subparagraph (2). (5) The chairperson of the Board or, in his or her absence, the vice-chairperson shall preside at all meetings of the Board: Provided that, if the chairperson and vice-chairperson are both absent from any meeting, the members present may elect one of their number to preside at that meeting as chairperson. (6) At any meeting of the Board, a majority of all the members of the Board shall form a quorum. (7) All acts, matters or things authorised or required to be done by the Board may be decided by a majority vote at a meeting of the Board at which a quorum is present: Provided that in the event of an equality of votes the chairperson or person presiding at the meeting shall have a casting vote in addition to his or her deliberative vote. (8) With the approval of the Board, the chairperson of the Board may invite any person to attend a meeting of the Board, where the chairperson considers that the person has special knowledge or experience in any matter to be considered at that meeting.