1. Click Edit next to the list view name. If you see Clone instead of Edit, you don’t have permission to edit this list view. Use Clone to clone the list view, save it under a different name and then edit the cloned list view.
2. In Specify Filter Criteria, change your Filter By Owner selection, if desired. Add or change the Field, Operator, orValue selections in Filter By Additional Fields.
3. Click Save to apply your edited filters to the list view.