Welcome to the community and thank you for using ProConnect Tax Online. To enter your PTIN, please see this knowledge base as it will help you with this:

How do I enter my EFIN, PTIN, and ERO PIN into ProConnect Tax Online?

https://accountants-community.intuit.com/articles/1608409-entering-an-efin-ptin-and-ero-pin-in-the-p...

For your EFIN please see this knowledge base article:

How do I obtain an EFIN from the IRS?

https://accountants-community.intuit.com/articles/1606369-how-do-i-obtain-an-efin-from-the-irs

You are way too late to get an EFIN for this filing season. It takes months. Apply anyway if you will continue to prepare tax returns but you will not be efilng any for a while.