Enrollment duration is the length of time a learner can stay enrolled in a course. The duration period starts when the learner enrolls (enrollment start). The duration can be set in days, hours and minutes.
Leaving the enrollment duration set to 0 will allow the learner to stay enrolled indefinitely. This is the default setting when a course is created.
To set the enrollment duration:
Navigate to the course
Click "Course settings."
Select the appropriate option under "Duration."