Within three months after the Terms of Reference have been received by the person who made the request for arbitration or, where paragraph 4 applies, within four months after the request for arbitration has been received by both competent authorities, the competent authorities shall each appoint one arbitrator. Within two months of the latter appointment, the arbitrators so appointed will appoint a third arbitrator who will function as Chair. If any appointment is not made within the required time period, the arbitrator(s) not yet appointed shall be appointed by the Director of the OECD Centre for Tax Policy and Administration within 10 days of receiving a request to that effect from the person who made the request for arbitration. The same procedure shall apply with the necessary adaptations if for any reason it is necessary to replace an arbitrator after the arbitral process has begun. The mode of remuneration is identical to the method used in the Code of Conduct on the EC Arbitration Convention
