Click the Federal Taxes tab, click Income, click the Start button to the right of Other income or loss (see the first two screenshots), and note that there are four boxes. However, you will only need one to report the ordinary income from your 1099-R.
To enter the withholding, use Forms Mode (click the Forms icon in the upper right side of the screen). In Forms Mode, open Form 1041, enter the federal income tax withheld on Line 25e, and check the 1099 box (see third screenshot).
If state taxes were withheld, then you simply enter the figure as Taxes located in the Expenses, taxes, and fees subheading, in the Deductions section under the Federal Taxes tab.
