Accustoms user in new process (6)

I believe the answer is:

inures

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'accustoms' is the definition.
(inuring is a kind of accustoming)

'user in new process' is the wordplay.
'user in' can be anagrammed to 'INURES'.
Though, I'm not clear how this is indicated.

Can you help me to learn more?

(Another definition for inures that I've seen is " Hardens or tempers".)

I've seen this clue in The Globe and Mail.

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