Crossword Genius

Require to make a collection? (4,3)

Ross

I believe the answer is:

call for

I'm a little stuck... Click here to teach me more about this clue!

'require' is the definition.
(synonyms)

'to make a collection?' is the wordplay.
I cannot quite understand how this works, but
'to' could be 'for' and 'for' is present in the answer.
'a' is found in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Another definition for call for that I've seen is " Request".)

I've seen this clue in the Evening Standard.
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