If you display a criterion
that uses estimates, and the estimate values are from an attribute
in the Editable Attributes list of the view
that is displayed in the chart, you will see an Edit icon on the bar chart. If you click
the Edit icon,
the bars change colors; you can also change
the size of a bar by dragging its right side with the mouse pointer.
When you change the size of the bar, you can change the estimate attribute
value for the element.