All meetings of the board of councilmen, whether regular or special or called, shall be open and public, and all persons shall be permitted to attend any meeting of the board of councilmen. Provided, however, nothing contained herein shall be construed to prevent the board of councilmen from holding executive sessions to consider the appointment, employment or dismissal of a public officer or employee or to hear complaints or charges brought against such officer or employee by another public officer, person or employee unless such officer or employee requests a public hearing. The board of councilmen may exclude from any such public or private meeting, during the examination of a witness, any or all other witnesses in the matter being investigated by the board of councilmen. (Ord. 81, 9-10-1975, eff. 9-17-1975)