Specifies a group for all series having the same nested group value. These items are to be placed into the same nested donuts.
A Object value, identifying a nested group.
Use the Group property to create nested groups for similar Nested Donut series. Series with a similar Group property value are nested in the same donuts.
|Group for Series 1, Series 2= 0;||Group for Series 1, Series3 = 0;|