The game list in ChessPad 2 can be sorted on more than one criterium.
For example, it is possible to sort the game list first by White player, and then by Black player name. You do this by ctrl-clicking the additional criteria. In this case, first click the White column header, and then ctrl+click the Black column header. Ctrl+clicking will keep the already present sort criteria, and add or reverse the criterium for the clicked column header. The column's sort direction arrows get a number attached to indicate the order of the sort keys.