Leaving boy may be conduct open to criticism (6-2)

I believe the answer is:

goings-on

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'be conduct open to criticism' is the definition.
I can't judge whether this defines the answer.

'leaving boy' is the wordplay.
'leaving' becomes 'going' (synonyms).
'boy' becomes 'son' (synonyms).
'going'+'son'='GOINGS-ON'

'may' is the link.

Can you help me to learn more?

(Other definitions for goings-on that I've seen before include "Hanky-panky" , "mischief" , "Activities, esp. dubious ones" , "Suspicious happenings" , "Suspect events or behaviour" .)

I've seen this clue in The Telegraph.

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