(1) At the discretion of the board, and where the rights of the parties will not be prejudiced thereby, all or part of the hearing, prehearing, or settlement conference may be conducted by telephone, television, or other electronic means. Each party in the proceeding must have an opportunity to participate effectively in, to hear, and if technically and economically feasible, to see the entire proceeding while it is taking place.

(2) The board may require documentary evidence to be submitted sufficiently in advance of the proceeding.