Is there a word (or prefix) that describes people who are responsible for something but not really authorized to do anything as regards that responsibility? I'm interested specifically in security but maybe there's a more general term. I thought of "para-professionals," but that seems to describe more people like law clerks or medical technicians.
Examples: security guards who are responsible for protection but not imbued with the power of police officers, toll booth collectors who can't really do anything about people who don't pay, crossing guards who can't write tickets, etc...