Where do I put federal income tax withheld on 1099-r

[Carl]

If this is for a 1099-R you received, it's reported in box 4 of that 1099-R. You enter it on the same screen you entered the box 1 information on. Under the Personal Income tab scroll down to Retirement Plans & Social Security. Under that heading elect to start/update IRA, 401(k), Pension Plans. Pay attention to detail so that you correctly indicate who that 1099-R belongs to, if filing a joint return.