Follow the steps below to Close or Unassign multiple assignments at the same time.
Close assignments to control what students can view or submit.
Unassign assignments to remove them entirely from students.
Select the Assignments tab from the left navigation bar.
Toggle to list view by selecting the list icon in the upper right corner.
Select the assignments you want to Close or Unassign by checking the box next to the left of those assignments. To unassign or close all assignments, select the box at the top of the column.
Select Close Submissions or Unassign.
A window will pop up asking you to confirm your choice. Please note, once you select Yes, Unassign it cannot be undone.