Robbers making group sit around (7)
I believe the answer is:
bandits
'robbers' is the definition.
(bandit is a type of robber)
'group sit around' is the wordplay.
'group' becomes 'band' (band can mean a group of people).
'around' is an anagram indicator.
'sit' anagrammed gives 'its'.
'band'+'its'='BANDITS'
'making' is the link.
(Other definitions for bandits that I've seen before include "Violent robbers" , "'Brigands, outlaws (7)'" .)