How To Clone an Existing Dashboard
Navigate to the blank campaign dashboard where you'd like to apply the cloned dashboard settings, and click "Set up Dashboard".
In the next screen, click "Clone an existing dashboard".
Then, click the dashboard you'd like to copy the layout and settings from, and click "Continue".
The blank dashboard will then be populated with an exact clone of the settings and widgets from the dashboard selected.
Note: cloning an existing dashboard will apply its existing widget settings or filters to the new dashboard.