Conduct in sector, poor (6)
I believe the answer is:
escort
'conduct' is the definition.
(thesaurus)
'sector poor' is the wordplay.
'poor' is an anagram indicator.
'sector' anagrammed gives 'ESCORT'.
'in' is the link.
(Other definitions for escort that I've seen before include "giving protection" , "Companion: train" , "Custodian" , "wheels?" , "Ford car, first produced in 1968" .)