The Board will “promptly” hold a meeting to hear from the complainant. But to protect the accused, pending its initial investigation, the Board first meets in “executive session” (closed to the public) to hear the details of the complaint.
If the Board believes the complaint warrants further investigation it may hold further closed hearings including testimony from the complainant, the accused and other witnesses. The Board also has subpoena power.
After these preliminary hearings the Board may vote to decline to hear the case further. Or it may move to public sessions, starting anew to hear the complaint and testimony.