By selecting the ChartData tab you can add or remove data series in your chart, specify the label and color of each data series, and you can stack your data by clicking on the Stacked check box. To select a data source, click on Binding element and choose a data source. To modify the content in the table, click on DataTable and make any changes to the data. See Defining the ChartDataSeries Object or Entering and Modifying Chart Data or the SeriesList property to find out more about the ChartDataSeries object.