Recruiting when recruitment is urgent? (8)

I believe the answer is:

pressing

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'is urgent?' is the definition.
(synonyms)

I can't explain the remainder of the clue.

(Other definitions for pressing that I've seen before include "application of buttons?" , "Requiring immediate attention" , "Important" , "in need of immediate attention" , "Requiring quick action" .)

I've seen this clue in the Evening Standard.

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