Retirement tax questions

The code in Box 7 of your 1099R is actually two codes.  Enter the B in the first box and then 2 in the second.  [See Screenshot #1, below] 

If you are using the online version of TurboTax, click the box I have more than one value in Box 7. [Screenshot #2]  A second box will appear.

Screenshot #1

Screenshot #2