4. For the purposes of paragraph
(a) A decision of the Commission to establish a working group under paragraph 3(a) shall be deemed to have been taken only if:
(i) all Parties have agreed to the establishment of a working group; or
(ii) in the event that a Party does not indicate agreement when the Commission makes a decision to establish a working group under paragraph 3(a), that Party has not objected in writing within seven days of the date on which the Commission so decides.
(b) A decision of the working group under paragraph 3(b) shall be deemed to have been taken only if:
(i) all Parties that are members of the working group have indicated agreement; or
(ii) in the event that a Party that is a member of the working group does not indicate agreement when the working group provides its report to the Commission, that Party has not objected to the report in writing within seven days of the date on which the working group provides its report.
5. If the Commission adopts a decision approving the terms and conditions for an accession and inviting an accession candidate to become a Party, the Commission shall specify a period, which may be subject to extension by agreement of the Parties, during which the accession candidate may deposit an instrument of accession with the Depositary indicating that it accepts the terms and conditions for the accession.
6. An accession candidate shall become a Party to this Agreement, subject to the terms and conditions for the accession approved in the Commission’s decision, either on:
(a) the 60th day after the date on which the accession candidate deposits an instrument of accession with the Depositary indicating that it accepts the terms and conditions for the accession; or
(b) the date on which all Parties have notified the Depositary that they have completed their respective applicable legal procedures,
whichever is later.