How can I add additional 1099Rs that are not pre listed?

[SharonD007]

You can enter additional 1099-R forms under Retirement Plans section of the Wages & Income.

1. Select Federal
2. Select Wages & Income
3. Scroll down to Retirement Plans and Social Security
4. Select Start or Update by IRA, 401(k), Pension Plan Withdrawals (1099-R)
5. If you are at the screen Review your 1099-R summary, select Add another 1099-R.
6. If you are just entering your first 1099-R, follow the instructions on the screen.

After you add the first 1099-R, you'll return to the screen Review your 1099-R summary, where you can select Add another 1099-R.

Refer to the TurboTax Help article  Where do I enter my 1099-R? for more details.