® SOUTHERN AFRICAN DEVEL.OPMEHT COIIIIUNITY ARTICLE 19 DISPUTES BETWEEN COMMUNITY AND STAFF Subject to the provisions of Article 14 of this Protocol the Tribunal shall have exclusive jurisdiction over all disputes between the Community and its staff relating to their conditions of employment. ARTICLE20 ADVISORY The Tribunal shall have jurisdiction to give advisory opinions, which may be requested by the Summit or by the Council in terms of paragraph 4 of Article 16 of the Treaty. ARTICLE 21 APPLICABLE LAW The Tribunal shall: (a) apply the Treaty, this Protocol and other Protocols that from part of the Treaty, all subsidiary instruments adopted by the Summit, by the Council or by any other institution or organ of the Community pursuant to the Treaty or Protocols; and (b) develop its own Community jurisprudence having regard to applicable treaties, general principles and rules of public international law and any rules and principles ofthe law of States. ARTICLE22 WORKING LANGUAGES The working languages of the Tribunal shall be English, Portuguese and French. Council may determine that any other language be used as a working language. PART IV Procedure Of The Tribunal ARTICLE23 RULES OF PROCEDURES The rules annexed to this Protocol shall form an integral part thereof. -7 Protocol on Tribunal The