The witness names or witness list would be helpful as early as possible. Obviously, we won't be able to communicate with them until we know whom the committee wants to meet with.
Once I get them from you, I have to have some sense, too, of how the lists are going to be balanced for each meeting space. Are we going to try to have a dozen witnesses at each location? Are we talking about a two-hour formal meeting? Are you thinking two panels of four or five?