law: Indian Medicine Central Council Act, 1970 
  8. Meeting of Central Council
  (1) The Central Council shall meet at least
  
  once in each year at such time and place as may be appointed by the Central
  
  Council.
  (2) Unless otherwise prescribed, one-third of
  
  the total number of members of the Central Council shall form a quorum and all
  
  the acts of the Central Council shall be decided by a majority of the members
  
  present and voting ;
  Provided  that no decision of the Central Council
  
  in relation to any Indian medicine shall be effective unless three members
  
  representing Ayurveda , Siddha 
  
  or Unani system of medicine, as the case may be, are present
  
  at the meeting and support the decision.