Scattered remains assembled in a group (7)

I believe the answer is:

seminar

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'assembled in a group' is the definition.
I can't judge whether this defines the answer.

'scattered remains' is the wordplay.
'scattered' is an anagram indicator.
'remains' with letters rearranged gives 'SEMINAR'.

Can you help me to learn more?

(Other definitions for seminar that I've seen before include "Marines (anag.)" , "workshop" , "University discussion" , "Meeting for study" , "Academic class" .)

I've seen this clue in the Evening Standard.

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