You can edit or delete your goals anytime once you add a performance indicator to a widget.
When on your dashboard, hover over the widget you wish to edit.
Click the ellipsis in the bottom right-hand corner of the widget and select edit widget.
You will be transported back onto the widget configuration screen.
From here, you can edit the goals of a benchmarker or turn it off for this specific widget.
Once you have made the desired changes to your benchmarkers, click Save Changes to update the widget and return to your dashboard.