You can delete data sources during run-time for the following objects:
Category, Time, XY, and Correlation charts.
Historian Grids and Grids.
To delete a data source in run-time, right-click the object and select Delete Data Sources. A dialog appears that allows you to select the data source to delete. If necessary, you can select multiple sources by holding down the Ctrl or Shift key on your keyboard and selecting the data sources with your mouse.