Dignify Ben and Noel in new arrangement (7)
I believe the answer is:
ennoble
'dignify' is the definition.
(I know that dignify can be written as ennoble)
'ben and noel in new arrangement' is the wordplay.
'and' says to put letters next to each other.
'in new arrangement' indicates an anagram (I've seen this in other clues).
'ben'+'noel'='bennoel'
'bennoel' with letters rearranged gives 'ENNOBLE'.
(Other definitions for ennoble that I've seen before include "Distinguish" , "Kick upstairs" , "Give rank or title to (someone)" , "Elevate in rank" , "Elevate to the aristocracy" .)