Just an organisation for outings (6)
I believe the answer is:
jaunts
'for outings' is the definition.
('jaunt' can be a synonym of 'outing')
'just an organisation' is the wordplay.
'organisation' is an anagram indicator.
'just'+'an'='justan'
'justan' anagrammed gives 'JAUNTS'.
(Other definitions for jaunts that I've seen before include "'Junkets, pleasure trips (6)'" , "Short pleasure trips" .)