ECOWAS REVISED TREATY shall take appropriate measures to eliminate such incompatibility. Member States shall, where necessary, assist each other to this end and adopt a common position. ARTICLE 85 INTERNATIONAL NEGOTIATIONS 1. Member States undertake to formulate and adopt common positions within the Community on issues relating to international negotiations with third parties in order to promote and safeguard the interests of the region. 2. To this end, the Community shall prepare studies and reports designed to help Member States to harmonise better their positions on the said issues. CHAPTER XXII GENERAL AND FINAL PROVISIONS ARTICLE 86 HEADQUARTERS OF THE COMMUNITY The Headquarters of the Community shall be situated in the capital of the Federal Republic of Nigeria. ARTICLE 87 OFFICIAL AND WORKING LANGUAGES 1. The official languages of the Community shall be all West African languages so designated by the Authority as well as English, French and Portuguese. 2. The working languages of the Community shall be English, French and Portuguese. ARTICLE 88 STATUS, PRIVILEGES AND IMMUNITIES 1. The Community shall enjoy international legal personality. 2. The Community shall have in the territory of each Member State: a) the legal powers required for the performance of the functions, assigned to it under this Treaty; 47