Reference : Charts and display preferences : Bar charts
  
Bar charts
A bar chart displays the priorities for a selected view and criterion.
Example of a bar chart
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 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.
Go up to
Charts and display preferences