You can identify sheets by name using the Worksheets and Charts properties. The following statements activate various sheets in the active workbook.
Worksheets("Sheet1").Activate
Charts("Chart1").Activate
DialogSheets("Dialog1").Activate
You can use the Sheets property to return a worksheet, chart, module, or dialog sheet; the Sheets collection contains all of these. The following example activates the sheet named "Chart1" in the active workbook.
Sub ActivateChart()
Sheets("Chart1").Activate
End Sub
Note Charts embedded in a worksheet are members of the ChartObjects collection, whereas charts that exist on their own sheets belong to the Charts collection.