What actions trigger what notifications? See the table below!
Please note that the user has to have the appropriate notification setting enabled to receive that type of notification.
In the case of Reminders and Reserve calling, they must be enabled from the system notifications preferences, and in the case of Removal notifications, they must be explicitly chosen by the admin, as they are not sent automatically.
Many types of notifications will also not be sent if an assignment is in the past (before the current time/date).