TurboTax cannot be used to prepare returns by paid tax preparers. That would be a violation of the terms of service. There is no way to enter a PTIN when you use do-it-yourself TurboTax. All of the returns prepared using TT will say "Self-Prepared."
If you are a professional tax preparer with a PTIN then you will need to use one of the professional software versions.
https://accountants.intuit.com/?s_cid=TT.com_MoreProds-Footer_ProTaxSoftware
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