​The Office of the Secretary General is an executive office that provides full support to the Secretary General, enabling him to fulfil his duties. These include the overall management, planning, policy guidance and coordination of the activities of the Organization. It helps the Secretary General to maintain effective relations with Governments and their diplomatic representatives and with relevant international organizations. It also supports the protocol functions of the Secretariat and maintains close relations with relevant Austrian government and City of Vienna authorities, as well as with OPEC Member Countries. ​