Combination charts combine two chart types. For example, you could create a Line Chart over a Bar Chart or a High-Low Chart over a Bar Chart .
To format combination charts:
Go to the Data tab in the Chart Properties dialog box (see Chart Properties: Data) and select Combo as the chart type; then, select the types of charts to create under Multi-Charts Option.
Enter information about the charts in the Chart Properties dialog box.
When you create multi-chart reports:
Enter the information about the X-Axis in the X-Axis tab (see Chart Properties: X-Axis).
Each chart has its own Y-Axis.
Enter information about the first chart’s Y-Axis in the Y-Axis tab (see Chart Properties: Y-Axis). Enter information about the second chart’s Y-Axis in the Y2-Axis tab.
Each chart has its own color palette.
Enter information about the first chart’s colors in the Palette tab (see Chart Properties: Palette). Enter information about the second chart’s colors in the Y2-Palette tab (see Chart Properties: Y2-Palette).