Volunteers get together to eat (5,2)

I believe the answer is:

joins up

'volunteers' is the definition.
(I've seen this in another clue)

'get together to eat' is the wordplay.
'get together' becomes 'join' (synonyms).
'to eat' becomes 'sup' (supping is a kind of eating).
'join'+'sup'='JOINS UP'

I've seen this clue in The Times.

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