Article 5
Terms of office, working groups and additional experts 1. The Group of Experts shall meet in plenary session twice a year at the Commission headquarters on invitation by the Commission. 2. In fulfilment of its mission as set out in Article 2, the Group of Experts may set up ad hoc working groups. 3. The Chairman may decide to invite other experts to address particular matters, at the request of a member or on his or her own initiative. 4. The members of the Group of Experts and any experts invited under paragraph 3 shall have their travel and subsistence expenses reimbursed in accordance with the provisions in force within the Commission.