Article 10 Amendment of statement of case and answer
(1)
Subject to paragraph (3) of this rule, a party may at any time amend his statement of case or answer by serving on the Secretary the amended statement or answer.
(2)
On being served with an amended statement of case or answer, the Secretary shall as soon as practicable serve a copy thereof on every other party.
(3)
No amended statement of case or answer shall, without the leave of the Chairman, be served after such date as the Chairman may direct under rule 11(2)(iii).