In the Edit Data Source section of the ReportWorX64 Ribbon, clicking the Remove button 
allows you to edit one of the following elements:
Data Source: Removes the currently selected data source from the worksheet.
Column: Removes the currently selected column of the data source.
Anchor: Removes the anchor/row column of the currently selected data source.
See Also:
ReportWorX Express (ReportWorX64) Ribbon