The Board of Regents on Wednesday unveiled more details about a long-awaited change allowing public comment at meetings, including that members of the public will have to sign up online.The nine-member board that governs Iowa’s public universities will start offering a public comment during its June 7-8 meeting in Cedar Falls.Via a pilot program, the board will reserve 30 minutes for public comment immediately after the full board convenes at 10 a.m.