You can create alerts for a task if you have access to it.
When you create an alert, its status is Open, and a notification is sent to the specified Assignee. After resolving the alert, the assignee can respond to the notification by marking the resolution complete, which sends notification to the Approver who can approve or reject it. If an Approver rejects it, the alert status returns to Open and the alert returns to the assignee.
For example, suppose you are running an AP Period Close Process and are unable to log in to the AP System. You can create an alert and send it to the System Administrator. The System Administrator resolves the login issue and reassigns it to you. You verify the solution and close the alert.
To create an alert: