A community or an ambulatory currency exchange shall not be conducted as a department of another business. It must be an entity, financed and conducted as a separate business unit. This shall not prevent a community or an ambulatory currency exchange from leasing a part of the premises of another business for the conduct of this business on the same premises; provided, that no community currency exchange shall be conducted on the same premises with a business whose chief source of revenue is derived from the sale of alcoholic liquor for consumption on the premises; provided, further, that no community currency exchange hereafter licensed for the first time shall share any room with any other business, trade or profession nor shall it occupy any room from which there is direct access to a room occupied by any other business, trade or profession.