The chairman or acting chairman of the board of mental illness shall sign and issue all notices, appointments, warrants, subpoenas, or other process required to be given or issued by the board, shall be responsible to conduct all meetings and hearings by the board and shall make all evidentiary rulings. The notices, reports, and communications herein required to be given or made may be sent by mail unless otherwise expressed or implied, and the fact and date of such sending or reception shall be noted on the proper record.
SDCL 27A-11A-1