Category field defines the list and order of levels that the chart will display automatically.

Category field supports different types of Columns:

• Text
  
• Numbers
  
• Date
  
• Symbols

Adding columns to the field is easy: simply check the box next to the column in the Fields pane; or drag and drop them in the desired order.

The below example shows a donut chart with five different categories. The chart will use these categories to create five levels of drill down. The order will be the same as specified in the Category field – in this example, Region -> Department -> Title -> Seniority -> Name.