Used certain people as evidence of delight (6)

I believe the answer is:

please

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

'delight' is the definition.
(I know that delight is a more specific form of delight)

'used certain people as evidence' is the wordplay.
'PLEASE' is hidden in amongst the letters.
However, I am not sure how the hidden word is indicated.

'of' acts as a link.

Can you help me to learn more?

(Other definitions for please that I've seen before include "Elapse (anag.)" , "Delight; amuse" , "Polite addition to a request" , "See 10 Across" , "Give satisfaction to" .)

I've seen this clue in The Irish Times.

Want a hint initially instead of a full solution? Install my app