Excerpted from the CIFL course on building dashboards with Google Sheets and Data Studio:
https://learn.codingisforlosers.com/d...
Setting up a date or control filter is simple - just select them from the right side of the main menu, and drag one onto your dashboard.
For date filters, you select a default date range (last 2 weeks, for example). And date filters will apply to all reports on a page by default, so no additional setup is required.
For control filters, you select a data source and dimension that you'd like to filter by. Then, to apply the filter to a specific chart, you 'group' them together (accessible from the right-click menu).
Note: control filters only work if they're on the same data source as the chart they're filtering for.