Lead pronouns? (5)

I believe the answer is:

usher

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'lead' is the definition.
(ushering is a kind of leading)

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

(Other definitions for usher that I've seen before include "Theatre/cinema worker" , "Helper at wedding" , "Doorkeeper in parliament or 29 down" , "Doorkeeper in court of law" , "One conducts people to seats" .)

I've seen this clue in the Sydney Morning Herald.

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