A Human task can send email notifications when the Human task completes in the workflow and when a task instance that the Human task defines changes status. To configure notifications for a Human task, update the Notifications properties on the Human task in the workflow. To configure notifications for a task instance, update the Notification properties on the step within the Human task that defines the task instances.
When you configure notifications for a Human task instance, you can select an option to notify the task instance owner in addition to any recipient that you specify. The option applies when a single user owns the task instance. When you select the option to notify the task instance owner, you can optionally leave the Recipients field empty
