Pro Rata Rule Tracking in TT

Retired and heard of the pro-rata rule recently.  I have $10,000 that I contributed post-tax in my IRA.  I did a $20,000 ROTH conversion in 2024 and my December 31st traditional IRA balance was $500,000.  I understand that a small amount of the conversion money is not taxed (about $400).  It was easy to enter the 1099R in TT but how do I set-up TT to do the pro-rata tracking?  

 

Side question...to confirm, I pretty much have to track this for the rest of my life as I begin even normal distributions?  

Thank you in advance.