A/HRC/45/13 on the mandate of the Working Group, its history, and ways to engage with its humanitarian procedure. 12. On 3 March 2020, the Chair-Rapporteur participated in an event organized by the Government of Argentina, in Buenos Aires, to mark the fortieth anniversary of the establishment of the Working Group on 29 February 1980. The event was held at the Escuela Superior de Mecánica de la Armada (ESMA) former clandestine detention centre. It was opened by the Secretary for Human Rights, with Estela de Carlotto and Rosa Bru representing the families of the disappeared. The Chair-Rapporteur reviewed part of the Working Group’s history and reflected on why the mandate is as needed today as in 1980. He also presented new audiovisual materials. 13. The Government of Turkmenistan requested the assistance of the Working Group in implementing the Declaration on the Protection of All Persons from Enforced Disappearance, and consequently has invited the Working Group to undertake a technical visit aimed at increasing the capacities of the authorities to tackle enforced disappearances in the penitentiary system. Initially planned for April 2020, the activity was postponed due to the ongoing COVID-19 pandemic. The Working Group continues to engage with the Government of Turkmenistan on conducting the visit as soon as the travel restrictions have been lifted. 14. On 28 May 2020, the Chair-Rapporteur facilitated a workshop on enforced disappearances, with government officials from 11 ministries and institutions in the Bolivarian Republic of Venezuela. The activity was organized in the framework of the Letter of Understanding between the Office of the United Nations High Commissioner for Human Rights (OHCHR) and the Government of the Bolivarian Republic of Venezuela. 15. On 8 and 10 June 2020, Houria Es-Slami delivered two online workshops to representatives of civil society and family associations working on the issue of enforced disappearances in the Syrian Arab Republic. The OHCHR-facilitated workshops enabled Syrian activists and family members to deepen their engagement with the Working Group, most notably in the implementation of the Working Group’s humanitarian mandate of assisting in clarifying the fate and the whereabouts of the forcibly disappeared. 16. The Working Group continues its practice of holding one of its sessions each year outside Geneva. The Working Group had programmed its 121st session to take place in San José, Costa Rica, in May 2020. However, the session had to be postponed due to the COVID-19 pandemic. The Working Group is grateful to the Government of Costa Rica for accepting to host a session of the Working Group, and looks forward to rescheduling a session in San José once travel restrictions have been lifted. 17. During the reporting period, all the members of the Working Group carried out a number of activities connected to enforced disappearances, which included participating in conferences, consultations, seminars, training events, workshops and lectures, organized by Governments and civil society organizations. 18. During its sessions, the Working Group continued to discuss its thematic report on standards and public policies for effective investigation of enforced disappearances. In 2018, the Working Group presented to the Human Rights Council an interim report, and invited States, families of the disappeared, civil society organizations and other stakeholders to provide relevant inputs for a full report on this matter, to be issued in 2019. In view of the richness of the information received, the Working Group decided to postpone the release of the study, in order to adequately consider the submissions. The study is included as an addendum to the present annual report (A/HRC/45/13/Add.3). 19. The Working Group is thankful for the continuous support, including through voluntary contributions, provided by donor States, notably France, Japan and the Republic of Korea. 4