...
Users with a significant number of courses they are enrolled in may decide to unpin older courses to clean up their view on the system homepage.
To Pin a course:
Step-by-step guide
Click the waffle menu in the upper right-hand corner.
Click the pin icon to the right of the course title you would like to pin.
...
Click the link to View All Courses under the Courses and Communities widget
Click on the three dots in the upper right-hand corner of the image for the course you want to pin.
Click the Pin button.
To Unpin a course:
Step-by-step guide
Click the waffle menu in the upper right-hand corner.
Click the pin icon beside the course title you want to unpin.
...