Duty list resort altered (6)
I believe the answer is:
roster
'duty list' is the definition.
(I've seen this before)
'resort altered' is the wordplay.
'altered' indicates an anagram.
'resort' anagrammed gives 'ROSTER'.
(Other definitions for roster that I've seen before include "List showing turns of duty" , "Duty rota" , "Roll" , "Schedule" , "Duty plan" .)