Content adapted from the Canvas Guide: How do I add an assignment using an external app?
Open Assignments
In Course Navigation, click the Assignments link.
Add Assignment
Click the Add Assignment button.
Select Submission Type
In the Submission Type drop-down menu, select the External Tool option.
Find External Tool
Click the Find button.
Configure External Tool
Scroll to the bottom of the External Tool list and select Zoom.
If you want the assignment to load in a new tab, click the Load in a new tab checkbox. Click the Select button.
Save and Publish
If you are ready to publish your assignment, click the Save & Publish button [1]. If you want to create a draft of your assignment and publish it later, click the Save button [2].
Schedule the Meeting

Click
Schedule a New Meeting. Complete the meeting details and click
Save.