Immediate availability of credit (6)

I believe the answer is:

direct

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'immediate' is the definition.
(similar in meaning)

'availability of credit' is the wordplay.
'credit' anagrams to 'DIRECT'.
However, I am unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for direct that I've seen before include "Control, supervise" , "Instruct" , "Straight - guide" , "Credit (anag) - steer" , "Control the affairs" .)

I've seen this clue in the Evening Standard.

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