To do so, right-click the orange vertical bar and choose Format Data Series from the resulting submenu. Be sure to right-click the orange bar and not the line chart.

This post recommends using Trellis plots instead of 3D bar charts for three-dimensional (three variable) data. In Winner of the Bad Graph Contest Announced, I promised to present alternatives to ...

To generate the chart, click the Developer tab and choose Scroll Bar Form Control from the Insert Controls option in the Controls group. In Excel 2003, this control is on the Forms toolbar.