pie chart in histogram

I would like to insert a pie chart with new data in the right upper corner of a histogram. How can this be done?

Anna

The only way to do this, that I know, is to create two separate charts. Remove any items you don't want visible in the pie chart: the title, border, etc. Adjust the size of the pie chart, and move it into position on top of the histogram. You may want to set the pie chart's 'Chart Area > Fill' to none.

Ok, thank you! It works out quite well if I group the charts anyway.