Dimension limits can be set for chart types, except for gauge charts and pivot tables. It controls the number of dimension values you can see in a given chart.
Using dimension limits, you can see the first, largest, and smallest dimensions:
Dashboardsheet, right-click and select Copy Sheet. This will create a copy of the sheet. The look and feel of all the objects will be the same. You can change the title of the sheet and delete the objects you don't need.
Top Sales. Right-click and remove all the charts and containers as you don't need them in this sheet. Keep the list boxes on the left.