1. Make sure you enable the required correlation rules required on the historical correlation engine.
2. Go to Historical tab (Make sure Enable Historical Correlation is checked).
3. Create a filter with the desired time frame + anything else you want to filter.
4. Run the query. Time depends on the amount of data and correlation rules.
Make sure your dashboard is set to cover the time period in step 3.
Is there a way to see the progress of the historical correlation ? I've launched one and it seems it didn't finish not even after 20 hours.