DRA-3.1.18
(a) During the course of an arbitration, a party may amend or supplement that party's claim, defence or counterclaim except where the Arbitration Committee considers it inappropriate to allow this, having regard to:
(i) Any delay involved;
(ii) The likelihood of prejudice to the other party; or
(iii) Any other relevant circumstances.
(b) The Arbitration Committee may require or accept amendment to or supplement of a party's claim, defence or counterclaim, and shall fix the period for the sending of such amendment or supplement.
July 2010