25. Staff  26. Class-child ratio  (2) The other judges of the High Court shall be appointed by the President, acting in  accordance with the advice of the Judicial Service Commission. (3) A person shall not be qualifie d to be appointed as a judge of the High Court unless -  (4) In computing, for the purposes of subsection (3) of this section, the period during which  any person has been qualified t o practise as an advocate or attorney any period during which he  or she has held judicial office after becoming so qualified shall be included. (5) If the office of Chief Justice is vacant or if the Chief Justice is for any reason u nable to  perform the functions of his or her office, then, until a person has been appointed to and has  assumed the functions of that office or until the Chief Justice has resumed those functions, as the  case may be, those functions shall be performed by s uch one of the judges of the High Court or  such other person qualified for appointment as a judge of the High Court as the President may  appoint for that purpose: Provided that-  (6) If the office of any judge of the High Court is vacant, or if any such judge is appointed to  act as Chief Justice, or is for any reason unable to perform the functions of his or her office, or if  the President, acting after consultation with the Chief Justice, is satisfied that the state of business  in the High Court requires that the number of judg es of the court should be temporarily increased,  the President, acting in accordance with the advice of the Judicial Service Commission, may  appoint a person qualified for appointment as a judge of the High Court to act as a judge of that  court:  Provided that a person may be so appointed notwithstanding that he or she has attained  the age of 70 years or such other age as may be prescribed for the purposes of section 88 of this  Constitution.  (7) Any person appointedunder subsection (6) of this section to act as a judge of the High  Court shall, subject to the provisions of section 97(4) and (5) of this Constitution, continue to act  for the period of his or her appointment or, if no such period is specified, until his  or her  appointment is revoked by the President, acting in accordance with the advice of the Judicial  Service Commission:  Provided that the President, acting in accordance with the advice of the Judicial Service  Commission, may permit a person whose appoin tment to act as a judge of the High Court has  expired or been revoked to continue to act as such a judge for such period as may be necessary  ( a )  he or she holds, or has held office, as a judge of a court having unlimited jurisdiction in  civil and criminal matters in Botswana, in a Commonwealth country or in any country  outside theCommonwealth that may be prescribed by Parliament or a court having  jurisdiction in appeals from such a court; or ( b )  he or she is qualified to practise as an advocate or attorney in such a court and has been  qualified for not less tha n ten years to practise as an advocate or attorney in such a court; ( c )  he or she is qualified to practise as an advocate or attorney and he or she has had the  experience in the teaching of law in a recognised university for not less t han ten years; or  ( d )  he or she is a Chief Magistrate who has held that office for not less than five years. (i)  a person may be appointed under this subsection notw ithstanding that he or she has  attained the age of 70 years or such other age as may be prescribed for the purposes of  section 97 of this Constitution; (ii)  a person appointed under this subsection, who is not a judge of the High C ourt, may,  notwithstanding the assumption or resumption of the functions of the office of Chief  Justice by the holder of that office, continue to act as a judge of the High Court for so long  thereafter and to such extent as may be necessary to enable him o r her to deliver  judgment or to do any other thing in relation to proceedings that were commenced before  him or her previously thereto. Copyright Government of Botswana