16 The Registry shall be headed by a Registrar who, under the direction of the President, shall be responsible for the non-judicial aspects and servicing of the Court. The Registrar shall be the principal administrative and accounting officer of the Court, and shall ensure that proper books of accounts are kept in accordance with the financial rules and regulations of the African Union. The Registrar and Assistant Registrars shall be persons of high moral character, be highly competent in and have extensive practical managerial experience. The Registrar shall be assisted by such other staff as may be necessary for the effective and efficient performance of the functions of the Registry. The staff of the Registry shall be appointed by the Court in accordance with the Staff Rules and Regulations of the African Union. The Registrar shall set up, within the Registry: a) b) 10. The A Victims and Witnesses Unit, which shall provide, in consultation with the Court and the Office of the Prosecutor, as appropriate, protective measures and security arrangements, counselling and other appropriate assistance for witnesses, victims who appear before the Court and others who are at risk on account of testimony given by such witnesses. The Unit personnel shall include experts in the management of trauma. A Detention Management Unit, which shall manage the conditions of detention of suspects and accused persons. salaries and conditions of service of the Registrar, Assistant Registrars and other staff of the Registry shall be determined by the Assembly on the proposal of the Court, through the Executive Council. Article 22C The Defence Office The Court shall establish, maintain and develop a Defence purpose of ensuring the rights of suspects and accused person entitled to legal assistance. Office for the and any other The Defence Office, which may also include one or more public defenders, shall act independently as a separate organ of the Court. It shall be responsible for protecting the rights of the defence, providing support and assistance assistance, to defence counsel and to the persons entitled to legal including, where appropriate, legal research, collection of