Bewitching charm is a factor in compelling attractiveness (8)

I believe the answer is:

charisma

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

'compelling attractiveness' is the definition.
(I've seen this before)

'bewitching charm is a factor' is the wordplay.
'charm is a' anagrams to 'CHARISMA'.
But, I am unsure how the anagram is indicated.

'in' is the link.

Can you help me to learn more?

(Other definitions for charisma that I've seen before include "Compelling attractiveness" , "Divinely bestowed power" , "Person's magnetic charm" , "Ability to inspire people" , "Compelling charm" .)

I've seen this clue in The Irish Times.

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