Reporting Dashboards can be saved and scheduled in the same manner as Tabular Reports.
When viewing a dashboard, with custom filters set, select the Save button to save a dashboard. Note that a dashboard must first be saved before it can be scheduled.
Enter a name in the Save Dashboard popup and select the Save button.
The saved name is reflected in the dashboard and the Schedule button becomes available. Select the Schedule button to schedule the reporting dashboard.
The Scheduled Report screen appears. Choose whether to Include as attachment and edit the Schedule frequency. With all options chosen, select the Save button to save the scheduled dashboard report.