First you need to add this report to your dashboard. To do that, click Add new gadget.  In the Add new gadget dialog, click Load all gadgets. Search for the Program Predictability Measure report and add it to your dashboard.

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• You have at least 1 completed sprints to filter by the SCRUM board
• You check the Warnings tab from time to time and triage tickets from there. The tickets shown in the Warnings tab are not included into the chart calculations, and thus in order to see the accurate picture on the chart, you might want to triage those tickets first.

See also

CvC PPM - Using Committed vs Completed Program Predictability Measure report