If the course has not been updated or has not expired, any user can play the course for the duration of the enrollment.
Step 1 - From the instructor's Dashboard, filter the enrollments to show COMPLETED modules:
Step 2 - Find the course in the filtered list: (ex. COR 195 Coronavirus)
Step 3 - Click on the blue i Review Course, then click the arrow next to the module name to run the course.