Badge pinned by maestro, setter (7)

I believe the answer is:

rosette

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

'badge' is the definition.
(rosette is a kind of badge)

'pinned by maestro setter' is the wordplay.
'ROSETTE' is hidden in amongst the letters.
But, I am unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for rosette that I've seen before include "Horse show award" , "Political supporter's ribbon" , "collection of ribbons" , "Test ore (anag) - badge" , "Mark of affiliation" .)

I've seen this clue in The Times.

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