The attendant in the hall (5)

I believe the answer is:

usher

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'the attendant' is the definition.
(usher is a kind of attendant)

I don't understand how the rest of the clue works.

(Other definitions for usher that I've seen before include "Guide at wedding" , "Person employed to put you in your place" , "R and B star" , "One who shows people to seats" , "One conducts people to seats" .)

I've seen this clue in the Evening Standard.

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