Crossword Genius

Organising these so clerk might use them to store valuables (7)

Ross

I believe the answer is:

lockers

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

'store valuables' is the definition.
Although both the answer and definition are plural nouns, I cannot understand how they can define each other.

'organising these so clerk might use them' is the wordplay.
'so clerk' can be anagrammed to 'LOCKERS'.
Though, I am unsure how this is indicated.

'to' acts as a link.

Can you help me to learn more?

(Another definition for lockers that I've seen is " Storage compartments for clothes and valuables".)

I've seen this clue in The Irish Times.
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