Goddess subsequently appearing in sober organisation (6)
I believe the answer is:
athena
'goddess' is the definition.
(I've seen this before)
'subsequently appearing in sober organisation' is the wordplay.
'subsequently' becomes 'then' (synonyms).
'appearing in' is an insertion indicator.
'sober organisation' becomes 'aa' (I am not sure about the 'sober' bit.).
'then' going inside 'aa' is 'ATHENA'.
Can you help me to learn more?
(Other definitions for athena that I've seen before include "One-time goddess" , "Greek goddess of a capital city" , "Greek goddess of wisdom etc." , "wise but fierce goddess" .)