Relating to inheritance, client age needs to be sorted out (9)

I believe the answer is:

genetical

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'sorted out' is the definition.
The definition suggests an adjective which matches the answer.

'relating to inheritance client age needs to' is the wordplay.
'client age' anagrams to 'GENETICAL'.
However, I'm not clear how the anagram is indicated.

'be' is the link.

Can you help me to learn more?

(Another definition for genetical that I've seen is " Hereditary".)

I've seen this clue in The Times.

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