Sorts out ceremonies in the auditorium (6)
I believe the answer is:
rights
'sorts out' is the definition.
(right can mean to sort out or correct)
'ceremonies in the auditorium' is the wordplay.
'ceremonies' becomes 'rites' (religious rites).
'in the auditorium' indicates a 'sounds like' (homophone) clue (ie as heard on a stage).
'rites' sounds like 'RIGHTS'.
(Other definitions for rights that I've seen before include "They are due by law, tradition or nature" , "They're due by law" , "Legal entitlemants" , "Privileges one is entitled to" , "Rectifies" .)