To add data to a data series using the C1Chart floating toolbar, complete the following steps:

1. Select the C1Chart control and click on the Open button to open the C1Chart floating toolbar if it is not already open.
2. Select the Data drop-down arrow from the C1Chart floating toolbar and choose the Edit data table item.
   
3. The Chart Properties Data Table editor appears. Locate the new series in the table and enter some arbitrary x and y values for the new series.
4. Once you finish entering the X and Y data values for the new series select OK. The new chart series appears on the chart.