Edit Fields from the PivotPanel

The PivotPanel control provides a drag-drop UI for editing a PivotEngine's fields and field lists. You can edit fields from the PivotPanel's context menu. To do so, right-click a field on the panel and select the "Field Settings…" option. This will bring up a dialog where you can edit the field's properties, including the filter (you can also do this from the PivotGrid on the right):