The freelancer logs into their account on site and visits the ACCOUNT page. Under the Affiliate Credits section there is an option to "Redeem credits for cash"
On the resulting page, the royalty recipient can cash out their balance to their PayPal account:
For royalty recipients who also happen to have a publisher account linked to their customer account, they can alternately use the checkbox under the Affiliate Credit section of the ACCOUNT page to have their royalty balance (their affiliate credit balance) transferred automatically into their publisher account earnings balance at the end of the month.
This transfer occurs just before end-of-month automatic PayPal payments from publisher accounts so it allows freelancer auto-paid royalties (plus affiliate credits earned in the affiliate program if any) to be combined with publisher earnings into a single, automatic monthly payment.