without affecting his consular status, be authorized to perform diplomatic acts. The performance of such acts by a consular officer shall not confer upon him any right to claim diplomatic privileges and immunities. 2. A consular officer may, after notification addressed to the receiving State, act as representative of the sending State to any intergovernmental organization. When so acting, he shall be entitled to enjoy any privileges and immunities accorded to such a representative by customary international law or by international agreements; however, in respect of the performance by him of any consular function, he shall not be entitled to any greater immunity from jurisdiction than that to which a consular officer is entitled under the present Convention. Article 18 Appointment of the same person by two or more States as a consular officer Two or more States may, with the consent of the receiving State, appoint the same person as a consular officer in that State. Article 19 Appointment of members of consular staff 1. Subject to the provisions of articles 20, 22 and 23, the sending State may freely appoint the members of the consular staff. 2. The full name, category and class of all consular officers, other than the head of a consular post, shall be notified by the sending State to the receiving State in sufficient time for the receiving State, if it so wishes, to exercise its rights under paragraph 3 of article 23. 3. The sending State may, if required by its laws and regulations, request the receiving State to grant an exequatur to a consular officer other than the head of a consular post. 4. The receiving State may, if required by its laws and regulations, grant an exequatur to a consular officer other than the head of a consular post. Article 20 Size of the consular staff In the absence of an express agreement as to the size of the consular staff, the receiving State may require that the size of the staff be kept within limits considered by it to be reasonable and normal, having regard to circumstances and conditions in the consular district and to the needs of the particular consular post. 9