17(1)If, during the proceedings of a group—
(a)a member of the group ceases to be a member of the Commission,
(b)the Chairman is satisfied that a member of the group will be unable for a substantial period to perform his duties as a member of the group, or
(c)it appears to the Chairman that because of a particular interest of a member of the group it is inappropriate for him to remain in the group,
the Chairman may appoint a replacement.
(2)The Chairman may also at any time appoint any reporting panel member to be an additional member of a group.