If you would like to change the "collect" date for an assignment before its due date, then you can adjust it in the assignment settings.
If the due date has already passed, follow these steps to return the papers and then adjust the "collect" date:
Click on the assignment from 'My Assignments'.
Choose a class.
Note: You will need to "return papers" and adjust the due date for each class individually.
On the Students tab of the Assignment Dashboard, click 'Return Papers' to allow students to continue working on the assignment.
To set a new "collect" date, go to Settings in the left menu, and select "Collect from students on...".
Choose a new date and time in the future and click 'Confirm'.
Click 'Save Updates'.
