25. Staff  26. Class-child ratio  (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 -  (3) The Cabinet may actnotwithstanding any vacancy in its membership. 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. (1) There shall be a Secretary to the Cabinet whose office shall be a public offic e.  (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 Cabi net, 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. (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 person or authority. (3) Nothing in thissection shall prevent Parliament from conferring functions on persons or  authorities other than the President. 48.  Command of armed forces PART III  Executive Functions  (ss 47-56)  47.  Functions of President  46.  Secretary to the Cabinet 45.  Oaths to be taken by Ministers and Assistant Ministers  ( a )  in the case of a Minister or Assist ant 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 m onths 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 theoffice is removed from office by the President; ( d )  upon the assumption by any person of the office of President.  ( 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.  44.  Cabinet Copyright Government of Botswana