You'll probably find it easiest to filter your custom report by position in that case (using simple
filters), and untick 'filter on active player' so that you see all players' hands/stats from one position in one report.
To filter by VP$IP you can enter a custom filter like:
#VP$IP# > 30
Tutorial: Custom Reports and StatisticsIf you want to see a stat for each position in a single line of a report you will need to build a custom stat for each position - see
How To: Make a New Version of a Statistic.