Copy clients ordered (7)
I believe the answer is:
stencil
'copy' is the definition.
(I've seen this before)
'clients ordered' is the wordplay.
'ordered' indicates an anagram.
'clients' anagrammed gives 'STENCIL'.
(Other definitions for stencil that I've seen before include "Design device" , "Cut sheet used for painting design through" , "Text template" , "It's perforated for ink or paint to pass through" , "means of decoration" .)