Gradebook outcomes

Hello,

I am a new adjunct using Canvas for the first time. My students told me that they can't see their grade. I checked and the outcomes are not visible to my students. I tried to enable them by following the directions given in the link:

https://community.canvaslms.com/t5/Instructor-Guide/How-do-I-use-the-Learning-Mastery-Gradebook-to-v...

I go to grades, although I don't see the Learning Mastery link option and I can't continue with the rest of the instructions. Is there a specific reason for which I can't see the Learning Mastery link option under gradebook?

Your help is greatly appreciated,

Maria