Officials stationed at the entrances of courtrooms (6)
I believe the answer is:
ushers
'officials stationed at the entrances of courtrooms' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for ushers that I've seen before include "Do they lead" , "Escorts" , "They show you to your seat" , "Wedding helpers" , "Theatre attendants" .)