You can use dashboard parameters to interact with dashboard items. For example, you can filter dashboard items by dashboard parameter values.
The Dashboard allows you to use any data-aware dashboard item as a filter for other dashboard items (Master Filter). End-users can select elements in a Master Filter item (grid records, chart bars, pie segments, etc.) to filter data in other dashboard items by the selected values.
The Dashboard provides a Drill-Down feature which allows end-users to change the detail level of data displayed in a dashboard item. The Drill-Down feature enables users to drill down to display detail data, or drill up to view more general information.