You can add text inside the Donut Chart element. You can give role-based authorizations to the element and set its visibility with show/hide/conditional options.
Datasource : Open the Datasource section in the Properties panel. Select Action from here. After selecting Action, you should select which value you want to show from the Data Label For Field section under DataSource.
Legend : Open the Legend section in the Properties panel. Select which data slice you want to close when you click on the data coming from the Data Label For Field under DataSource.
Left Axis : Open the Left Axis section in the Properties panel. It is the area where the values shown on the left (Y axis) are shown/hidden.
Right Axis : Open the Right Axis section in the Properties panel. This is the area where the values below (X axis) are shown/hidden.
Begin At Zero : Open the Begin At Zero section in the Properties panel. It allows you to show the smallest data value from the DataSource section as the smallest value in the Chart.
Show Data Labels: Open the Show Data Labels section in the Properties panel. When you activate the Switch, the Show Data Labels property allows you to specify whether to show labels (for example, the name of the slice or the data value it represents) for each slice on the chart.
