You can view all assignments in the Markbook set by any teacher.
Click on the Markbook tab within your course. By default, only the assignments that you have set in this course will be displayed. To view all assignments, click on ‘Assigned by’ and select ‘All teachers’. On your mobile device this will be found within your filters.
This will now display all assignments assigned and you will be able to view who assigned under the title of each assignment.