Theatre attendants (6)
I believe the answer is:
ushers
'theatre attendants' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for ushers that I've seen before include "They show people to their seats in theatres" , "Officials stationed at the entrances of courtrooms" , "Rushes with conductors" , "They show attendees to seats" , "They show you to your seat" .)