You can add text inside the Area 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. You can choose which of the options you want the first, second data you selected in the DataSource section to be displayed on top, bottom, right and left.
Left Axis : Open the Left Axis section in the Properties panel. This 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.
