Offices, business, governmental, and professional offices (except health care, but including counseling services). One parking space shall be provided for each 300 square feet of floor area for the first 8,000 square feet of gross floor area. One additional parking space shall be furnished for each 700 square feet or fraction thereof for the next 12,000 square feet of total floor area, and one additional parking space shall be provided for each 1,000 square feet, or fraction thereof, for total area in excess of 20,000 square feet. One parking space shall also be provided for each staff member or employee on the maximum shift.