Crossword Genius

Settles rises in salary (4,2)

Ross

I believe the answer is:

pays up

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

'settles' is the definition.
(paying up is a kind of settling)

'rises in salary' is the wordplay.
I cannot quite understand how this works, but
'salary' could be 'pay' (synonyms) and 'pay' is found within the answer.
The remaining letters 'sup' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

(Another definition for pays up that I've seen is " forks out".)

I've seen this clue in The Globe and Mail.
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