Hello @evans_patrice Welcome to the Canvas Community. Thank you for posting your question. Per the Canvas Release Notes (2019-11-16), the Microsoft Immersive Reader feature is being offered on a trial basis. Also, it is only available in Canvas course "Pages". It is not available for other areas of your course for things like "Assignments", "Discussions", or "Quizzes". More information is provided in: How do I use the Microsoft Immersive Reader when viewing a page as an instructor?.
I know that this probably isn't the answer you were hoping for, but I do hope it has helped to answer your question. Please let Community members know if you have any other questions about this. Be well, and stay safe!