The highest body of the Institute is the General Assembly which elects from among its Fellows the main governing body: the Council. The Council is made up of 60 elected individuals as well as ex-officio members representing selected institutions. Council elections for half of the seats take place every two years at the General Assembly. The Council in turn elects from among its members an Executive Committee, the Association's administrative body. Furthermore, there is a Senate in place to provide advice,which appoints from among its members an Arbitral Tribunal, tasked with settling any disputes within the Association.The Council delegates many of its tasks and powers to its standing committees which deal with matters such as projects, membership and international relations. The Council meets at least twice a year.