All Pitt Law faculty/staff/students have Procertas accounts; you should have received an activation email from Procertas. Just follow the instructions on the email.
If you can't find your email, go to the Procertas log-in page and click "Resend activation link" towards the bottom right of the screen.
If you did not receive your activation email from Procertas, please email tsoliven@procertas.com.
Pitt Law alumni can request a Procertas account by emailing Procertas and providing their name, class year, and email address.