JReport provides several sample dashboards in the Public Reports > SampleReports folder in the server resource tree. You can run them in JDashboard directly and further edit the dashboards if you want. However running dashboards saved in the public folders requires that you have the Execute and/or Edit permissions on them.
You can run a dashboard in any of the following ways. Make sure to use the appropriate way because after JDashboard is open, you cannot change its working mode and if you need to use the other mode, you have to re-run the dashboard using the correct way.
You can also use the Run option to run multiple dashboards at a time. To do this, check the checkboxes ahead of the required dashboards and click Run > Run on the task bar or right-click in any dashboard row and select Run from the shortcut menu.
After saving the dashboards you create to the server resource tree, you can also use the above methods to run them.