Article 18 4.

The meetings of the Administrative Board shall be convened by its Chair. The Chair of the Board of Regulators or the nominee of the Board of Regulators, and the Director shall participate, without the right to vote, in the deliberations unless the Administrative Board decides otherwise as regards the Director. The Administrative Board shall meet at least twice a year in ordinary session. It shall also meet at the initiative of its Chair, at the request of the Commission or at the request of at least a third of its members. The Administrative Board may invite any person who may have a relevant opinion to attend its meetings in the capacity of an observer. The members of the Administrative Board may, subject to its rules of procedure, be assisted by advisers or experts. The Administrative Board's secretarial services shall be provided by ACER.