Hi. In ProSeries you can split the sale on the Schedule of Gains and Losses. 

Find the stock sale on the PA Schedule of Gains and Losses (Schedule Gain/Loss).

There should be two columns at the left side of the ‘Sale or Exchange of Property’ table labeled ‘Not PA’ and ‘Part PA.’ Check the box corresponding to the sale you need to split in the ‘Part PA’ column.

The sale marked as ‘Part PA’ will show up in the next table. Enter the PA amounts for sales price, basis, and gain/loss in the appropriate columns.

The PA amounts you entered will be carried to the PA schedule D.