8. In premises occupied by a government agency, a municipal body, a school body or any agency or body referred to in the second paragraph of section 3 of which the agency or body is the owner or lessee, smoking is prohibited(1) in a room or at a counter intended to provide services to persons who may be on the premises;
(2) in a library, a laboratory, a conference room, a classroom, or in a room where a seminar is being conducted;
(3) in an elevator;
(4) in any area designated by the person who is the highest authority within the public body.