Council Decision (EU) 2020/678 of 18 May 2020 on the position to be taken on behalf of the European Union in the CETA Joint Committee established under the Comprehensive Economic and Trade Agreement (CETA) between Canada, of the one part, and the European Union and its Member States, of the other part, as regards the adoption of a decision setting out the administrative and organisational matters regarding the functioning of the Appellate Tribunal