You can just type 1099R into the search box at the top of your return,
then find and it will give you a Jump To link to go right to it.
OR
Enter a 1099R under
Federal Taxes Tab
Wages & Income
Choose Jump to Full List -or I'll choose what I work on,
Then scroll way down to Retirement Plans and Social Security,
Then IRA, 401(k), Pension Plans (1099R) - click Start or Update
Pick
the right kind of 1099R you have and on the same screen be sure to pick
which person it is for if you are filing a Joint return.
After
you enter the 1099R be sure to answer all the follow up questions on the
next screens to determine how much is taxable or not. Go all the way to
the end of the section. You have to enter it from the 1099R because
there are codes on it you need to enter properly.