Perhaps bishop's staff (3)

I believe the answer is:

man

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'staff' is the definition.
(as in staffing or manning a particular place)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for man that I've seen before include "Isle of ..., ... o'war" , "Irish Sea isle" , "Individual" , "Provide with crew" , "Bishop, perhaps" .)

I've seen this clue in The Times.

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