Witnesses the seizure and considers it right to (4,3)

I believe the answer is:

sees fit

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'considers it right to' is the definition.
I can't tell whether this defines the answer.

'witnesses the seizure' is the wordplay.
'witnesses' becomes 'sees' ('see' can be a synonym of 'witness').
'the seizure' becomes 'fit' (fit is a kind of seizure).
'sees'+'fit'='SEES FIT'

'and' acts as a link.

Can you help me to learn more?

(Another definition for sees fit that I've seen is " Thinks appropriate".)

I've seen this clue in the Evening Standard.

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