How do I update SSN for the dependent on return I have started? It transferred TIN from last year and there is not screen that shows the info on personal info screen.

To change the SSN for a dependent in TurboTax, go to My Info and scroll down to your dependent.  Click the pencil next to the name to edit and go through the entire dependent interview.  The question that asks for the SSN is at the end of the interview and not on the same screen that asks for the name and date of birth.