Get your taxes done using TurboTax

Can you (or anyone) help with EXACTLY HOW you are accessing the form in TurboTax.  If you have been successful, a step by step instruction with help a lot of people in this forum.  I don't think we will get another 1099-R right?  I have the desktop version of the software.  Where do I start.  Let most people here, I took out a distribution in 2020 and spread it over 3 years.  I  just want to allow for the second 1/3 on my 2021 taxes.  How do I start?