Congratulation that was very quick. I'm happy for you, hopefully you'll reunite with your family soon. I hope my family and everyone's families here get reunited as quickly.
No he doesn't need to attach the PR copy just stating the name of the dependent oversea is enough. It may take 2 to 3 business days to get reply. You're welcome.
Tell your friend to send the visa office an email stating that he hasn't received any information regarding his dependents and later their checklist will be sent.