Editing the due date of an assignment can be done by following these easy steps.
Once you are logged on to your Thinking Nation Teacher Account, follow these steps to edit the due date of an assigned CRP or Formative Assessment:
Step 1: Select the class period in which you would like to edit the due date. 
Step 2: Locate the title of the CRP or Formative Assessment you need to edit, and click on the "settings" icon in the upper righthand corner of the column. 
Step 3: A drop-down menu will appear. Click on the "View Assignment" option. This will open the assignment on your full screen.
Step 4: At the bottom of the screen, it will display the original window of access that was assigned for the CRP or Formative Assessment. There is an "Edit" button to the right that will allow you to edit that date range, and you will be able to change the due date.
Step 5: Once you have entered your new due date, make sure you click "Save"!
Below is a quick step-by-step video on this process: