Since I'm "just" a pp w/o ever putting up a profile for someone, I don't know if you can submit it online for him or if it has to be printed, filled out and send to WAP via mail.
But here's a link for you (and him) that will hopefully guide you through the necessary steps.
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It's on the main menu, under the item "List an Inmate": https://writeaprisoner.com/inmate-new-listing . This creates a new profile for him, but you have to pay.
Since I'm "just" a pp w/o ever putting up a profile for someone, I don't know if you can submit it online for him or if it has to be printed, filled out and send to WAP via mail.
But here's a link for you (and him) that will hopefully guide you through the necessary steps.
https://writeaprisoner.com/inmate-new-listing
Good luck in finding a penpal! Done with the right ppl, it's a good thing for sure!