The government has one person on one level, then another above that, then another above that then another above that! In the job they all have under a Ministry heading.
-- One on top of thee other and all know their role. " Know thy role and shut zee pie hole!" The Rock!
Jel -- One step, two steps three steps four and your out the door - levels like stories in a building -- all obey the one above them -- 12345678 -- or YOUR FIRED!