Template for drawing clients amended (7)

I believe the answer is:

stencil

'template for drawing' is the definition.

'clients amended' is the wordplay.
'amended' is an anagram indicator.
'clients' with letters rearranged gives 'STENCIL'.

(Other definitions for stencil that I've seen before include "Design device" , "office plate" , "outline" , "Cut-out for painting patterns or shapes" , "Design inked through perforated sheet" .)

I've seen this clue in The Times.

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