Academic Settings / Marking Settings / General Settings / Assessments & Assignments / Assignment Submissions / Notify Educators upon Assignment Submissions
Here, you can choose whether teachers will be notified when students submit assignments.
Example
Setting -> Active
When the student presses the submit button, the teacher will receive a notification as shown in Figure 2&3.
Figure 1
The teacher received the notification of submission of the assignment.
Figure 2
Figure 3