Copyright Government of Botswana 
Assistant Minister.  43. Tenure of office of Ministers and Assistant Ministers   The office of any Minister or Assistant Minister shall become vacant-  (a) in the case of a Minister or Assistant Minister appointed from among the Members of the National Assembly, or in the case of a Minister or Assistant Minister appointed from among persons who are not Members of the Assembly who becomes a Member of the Assembly before the expiration of four months from the date of his or her appointment-   (i) if he or she ceases to be a Member of the National Assembly otherwise than by reason of a dissolution of the National Assembly; or   (ii) if, at the first sitting of the Assembly after a general election, he or she is not a Member of the Assembly;  (b) in the case of a Minister or Assistant Minister appointed from among persons who are not Members of the Assembly, if before the expiration of four months from the date of his or her appointment-   (i) circumstances arise (other than a dissolution of the Assembly) that, if he or she were such a Member, would cause him or her to vacate his or her seat in the Assembly; or   (ii) he or she does not become a Member of the Assembly;  (c) if the holder of the office is removed from office by the President;  (d) upon the assumption by any person of the office of President.  44. Cabinet   (1) There shall be a Cabinet which shall consist of the President, Vice-President and the Ministers.  (2) There shall preside at meetings of the Cabinet-  (a) the President;  (b) in the absence of the President, the Vice-President; or  (c) in the absence of the President and the Vice-President, such Minister as the President may designate.  (3) The Cabinet may act notwithstanding any vacancy in its membership. 45. Oaths to be taken by Ministers and Assistant Ministers   The Vice-President, a Minister or an Assistant Minister shall not enter upon the duties of his or her office unless he or she has taken and subscribed the oath of allegiance and such oath for the due execution of his or her office as may be prescribed by Parliament. 46. Secretary to the Cabinet   (1) There shall be a Secretary to the Cabinet whose office shall be a public office.  (2) The Secretary to the Cabinet shall have charge of the Cabinet Office and shall be responsible, in accordance with such instructions as may be given to him or her by the President, for arranging the business for, and keeping the minutes of, the Cabinet, for conveying decisions of the Cabinet to the appropriate person or authority, and shall have such other functions as the President may from time to time direct. PART III Executive Functions (ss 47-56) 47. Functions of President   (1) The executive power of Botswana shall vest in the President and, subject to the provisions of this Constitution, shall be exercised by him or her either directly or through officers subordinate to him or her.  (2) In the exercise of any function conferred upon him or her by this Constitution or any other law the President shall, unless it is otherwise provided, act in his or her own deliberate judgment and shall not be obliged to follow the advice tendered by any other