Executive's helper to keep teasing model (7)

I believe the answer is:

paragon

I'm a little stuck... Click here to teach me more about this clue!

'model' is the definition.
(a paragon is a model example of something)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for paragon that I've seen before include "An ideal" , "Perfect example of a quality" , "Role model" , "Perfect diamond" , "Perfect type" .)

I've seen this clue in The Times.

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