I have been exploring the Pie in Pie graph but it is not fully fitting
my needs. I am assume my data set should appear below

Column Header Name Total Calls Calls Missed
A1 Bob 20 5
A2 Jim 30 7
A3 Fred 40 3
A4 Steve 10 1

The Larger Pie consists of the total Calls and I want it placed in the
upper left corner. The smaller pie consists of the Missed Calls and
placed in the lower right corner.

Is it possible to play with the coordinates of a pie graph to angle
the graphs?
Is my assumption of the data layout correct or should I change for
format?
Or do I build 2 separate graphs and overlay it?

Any suggests or links are appreciate.