You may choose to "Favorite" certain courses in your Courses list - this results in only the "Favorited" courses showing up in your Canvas Dashboard. Non-favorited courses will be hidden.

NOTE: Once you have favorited a course, NEW courses that you are enrolled in will NOT be automatically added to your favorites.

Please see the link below for more information:

How do I customize my Courses List?  https://community.canvaslms.com/docs/DOC-1288