To the left of each widget instance there are edit and delete buttons.
To make changes to a widget instance click the edit button. Make any necessary updates and click save. You will need to republish any templates that have the widget in use in order to see any changes reflected in your Discovery environment.
You cannot delete a widget instance that is being used by any content view template. To delete a widget instance you must first remove it from any templates it’s being used on. Once this is done, you can click the delete button and click ok to confirm that you want to delete the instance. This action cannot be reversed.