When you are enrolled in more than one Canvas course, you can customize the active courses you want to show in your Course list. Courses you want to show in the Courses menu are called favorite courses. You can favorite any published course that appears in the My Courses section on the course list page.
https://community.canvaslms.com/t5/Canvas-Basics-Guide/How-do-I-customize-my-Courses-list/ta-p/618759