Arrange to make permanently higher? (3,2)

I believe the answer is:

fix up

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'arrange' is the definition.
(synonyms)

'make permanently higher?' is the wordplay.
I cannot really understand how this works, but
'make' could be 'fix' (synonyms) and 'fix' is located in the answer.
'higher?' could be 'up' and 'up' is found within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).

'to' acts as a link.

Can you help me to learn more?

(Another definition for fix up that I've seen is " Provide".)

I've seen this clue in the Evening Standard.

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