List the sorter sorted out? (6)
I believe the answer is:
roster
'list' is the definition.
(a roster is a list or register)
'sorter sorted out?' is the wordplay.
'sorted out?' indicates anagramming the letters.
'sorter' with letters rearranged gives 'ROSTER'.
'the' is the link.
(Other definitions for roster that I've seen before include "Duty rota" , "List of duties and those who are to perform them" , "List of people's turn of duties" , "List showing turns of duty" , "Schedule" .)