1. On either the Row content or Column content tab, Select Date snapshot(s) from the Select content type drop down box.
2. In the Select row/column (dates) content section, select the date type in which you are interested. Use the tabs to navigate between the date types.
3. Use the date type form to define your options and click the Add selection button.
4. For Relative date period and Date range types you can use the Snapshot increment option to define the interval between data points.

If you need to alter a date range you can replace one in the report by using the Replace selection button in either the row or column where the original selection was defined.