Turned out during case for conference (8)
I believe the answer is:
tutorial
'conference' is the definition.
(tutorial is a kind of conference)
'turned out during case' is the wordplay.
'turned' is an anagram indicator.
'during' is an insertion indicator.
'case' becomes 'trial' (I've seen this in other clues**).
'out' anagrammed gives 'uto'.
'uto' inserted into 'trial' is 'TUTORIAL'.
'for' is the link.
(Other definitions for tutorial that I've seen before include "University lesson" , "Conference" , "Private lesson" , "Seminar" , "University study period" .)