paragraph 61 in volume 1, chapter 5, Advisory Opinions
As in the case of the Council of the League of Nations, neither the Charter nor the Rules of Procedure of the General Assembly contains specific provisions regarding the method of deciding to request an advisory opinion.1 The General Assembly treats such proposals in the normal course of its business. Customarily (and unless the General Assembly should decide otherwise), in the regular and special sessions of the General Assembly the agenda item is first discussed in o…