Filed, Rejected. Where is Federal Tax Tab that I am supposed to select to put my new IP Pin?

Instead of Fed tab the Home & Business splits it out into Business and Personal.  So go to Personal.

Here's how to enter your IP PIN in TurboTax if you are e-filing.

• Click the Federal Taxes tab or Personal (Home & Business)
• Click "Other Tax Situations."
• Scroll down to the section "Other Return Info."
• Click the Start, Update, or Revisit button for "Identity protection PIN."

For security, TurboTax does not show the IP PIN on the printed copy of your return.