TurboTax will automatically add the RC(1000) entry if you have entered a Form 1099-R that indicates that you are subject to RMDs and you are able to answer the relevant questions after clicking the Continue button on the page that lists the Forms 1099-R that you have entered. If you have not made any Form 1099-R entries that would trigger TurboTax to present these questions, simplest will be to print your tax return an mail it after manually making the necessary entries in Part IX of Form 5329.
