ZoomCharts Documentation

Give even deeper insights to your users by featuring multiple levels of data in your donut chart. With Drill Down Donut PRO, you can create a drill down hierarchy of up to nine levels. Users can drill down by simply clicking or tapping on a slice. 

To create a drill down hierarchy, simply add multiple categories to the Category field. The hierarchy will be based on the category order in that field – you can drag-and-drop them to achieve the desired order.