Any applicant may at any time before the commencement of hearing, voluntarily withdraw his or her application, in which case the action shall be dismissed without prejudice. After commencement of the hearing a voluntary dismissal may be taken only with the approval of the Board.
When, at the time set for the hearing or continued hearing on any application, neither the applicant nor any one on his or her behalf appears, and no adjournment has been previously requested, the action may be dismissed without prejudice.
A. 
The Board may, at any time, request a written report on any particular matter from any officer, board, or agency in connection with a pending case; provided, however, that a copy of any such report shall be made available to the applicant who shall, if requested, have an opportunity to question the maker of such report as to any fact or conclusion therein contained.
B. 
The Board may arrange to take the testimony of any expert witness employed by it.