All those present when the news is broadcast party (10)

I believe the answer is:

attendance

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'all those present' is the definition.
I can't tell whether this definition defines the answer.

'when the news is broadcast party' is the wordplay.
'when the news is' becomes 'at ten' (eg BBC d0 O'Clock News).
'broadcast party' becomes 'dance' (dance is a kind of party. I am not sure about the 'broadcast' bit.).
'atten'+'dance'='ATTENDANCE'

Can you help me to learn more?

(Other definitions for attendance that I've seen before include "how many are watching?" , "Presence; gate" , "Act of being present" , "Number at gathering" , "Number present" .)

I've seen this clue in The Guardian.

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