Level 15

On Screen 8, make sure you enter a Filing date.  Then scroll down to the Late Return Penalty & Interest section and enter a 1 for Late filing of return (1=automatic) and/or Late payment of tax (1=automatic) as applicable.  These penalties will then be computed automatically.  If you want interest added, you will need to plug that in on the line for Interest (1=automatic).

The summation of these will show on the bottom of the return, with a reference to the breakdown on a statement.  And the detailed computations will be included as part of the Worksheets.

Still an AllStar