Order at office meeting (10)

I believe the answer is:

injunction

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'order' is the definition.
(I know that injunction is a type of ban)

'office meeting' is the wordplay.
'office' becomes 'in' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'meeting' becomes 'junction' (synonyms).
'in'+'junction'='INJUNCTION'

'at' is the link.

Can you help me to learn more?

(Another definition for injunction that I've seen is " Order".)

I've seen this clue in The Times.

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