Yes, it is possible to make custom versions of stats that will only use heads-up data.
You can add this into the column expressions:
tourney_hand_summary.cnt_players = 2
Replace tourney_ with cash_ if you play cash games, but I guess this will be for lottery tournaments.
The Custom Stats Guide
has an overview, and the Tutorial: Custom Reports and Statistics
goes into much more detail including how to make new versions of existing statistics.