Here are useful training links for using ProConnect:

https://proconnect.intuit.com/tax-online/training-courses/

https://proconnect.intuit.com/training/tax-online/

As a professional tax preparer, you want to review this:

https://proconnect.intuit.com/community/business-information/help/how-do-i-enter-my-efin-ptin-and-er...

Or, are you trying to treat this as if this is TurboTax, which is DIY and they pretend you don't need to know tax regulations at all?