Hi - I think I may be hitting a limitation of the PieChart. With a simple chart, I can include/exclude columns, but I cannot find a parallel with composite charts. Can you please point me in the right direction, thanks!
With a composite chart you can get a similar behavior by manipulating the Series collection. Each series can only be bound to one column and pie chart can only display one series at a time. You can access the chart layer's Series collection and only keep the series you want to display in there.