A notification can be added to any of your upcoming tasks through the task editor. By default, notifications are set as “same day” reminders. You can modify them to remind you a number of days before deadlines at the time that suits changes can also be made through the preferences (gear menu).
Once a notification is set up, you will have the option to remove it from your display, postpone it to a later date or mark the task as completed.
Note: Notifications are currently only possible on iOS devices