When a decision is rendered, there are two avenues for redress: an administrative review, I imagine, and an appeal board. With appeal boards, it is always the same people hearing the case—you say you have 25 members. If the applicant has already been heard once, other members out of the 25 will hear the case the second time. The second time, there are no witnesses, just arguments.
On March 30th, 2010. See this statement in context.