I'm pretty sure that for these SSRS makes a decision. I don't think you get much choice in it if I'm honest.
I don't make a massive use of Pie charts (I think I might have one or two over our entire resposititory), so I'm not sure. I had a look at one and couldn't see anything immediate that suggested how to do it.
Thom~
Excuse my typos and sometimes awful grammar. My fingers work faster than my brain does.
Larnu.uk