Arrangement may see others upset about carbon quota (13)
I believe the answer is:
orchestration
'arrangement' is the definition.
(orchestration is a kind of arrangement)
'others upset about carbon quota' is the wordplay.
'upset' is an anagram indicator.
'about' indicates putting letters inside.
'carbon' becomes 'c' ('C' can be a synonym of 'carbon').
'quota' becomes 'ration' (I've seen this before).
'others' is an anagram of 'orhest'.
'orhest' enclosing 'c' is 'orchest'.
'orchest'+'ration'='ORCHESTRATION'
'may see' acts as a link.
(Other definitions for orchestration that I've seen before include "Arrangement of string, brass, woodwind and percussion parts" , "Scoring for strings, brass, woodwind and percussion" , "Musical arrangement" , "Composer's skill" , "Note arrangement" .)