Instigates some simple arrangement (6)

I believe the answer is:

impels

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'instigates some' is the definition.
I can't tell whether this defines the answer.

'simple arrangement' is the wordplay.
'arrangement' is an anagram indicator.
'simple' with letters rearranged gives 'IMPELS'.

Can you help me to learn more?

(Other definitions for impels that I've seen before include "Spurs" , "Urges forward" , "Drives or forces" , "Forces, urges to action" , "Urges or drives to do something" .)

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

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