It's raised when one is in sad disarray (4)
I believe the answer is:
dais
'it's raised' is the definition.
I can't tell whether this defines the answer.
'one is in sad disarray' is the wordplay.
'one' becomes 'i' (Roman numeral).
'is in' indicates putting letters inside.
'disarray' is an anagram indicator.
'sad' with letters rearranged gives 'das'.
'i' inserted within 'das' is 'DAIS'.
'when' acts as a link.
Can you help me to learn more?
(Other definitions for dais that I've seen before include "device to give some an uplift at conference?" , "Platform, rostrum" , "stepping up here?" , "Raised floor" , "stage" .)