Expiration refers to how long (number of days) or until when (a date) the participants have access to a course.
Expiration in settings-tab (project start page)
Here you can set a default value for course participants that are invited to the course after you’ve entered this setting. No changes will be made for participants that already have been invited to the course if you edit the setting afterwards.
NOTE! You enter the number of days you want the course to be open for course participants. Do not enter a date! If you want to set a date for when the course should be expired for participants, please see "Change Expiration in Participants-tab" below.
Change expiration in participants-tab
Here, you can edit the expiration you’ve set in settings for specific course participants by using two different options - setting a date or adding/subtracting number of days. Or if you haven’t entered anything in settings, you can also use "Set a date" to enter a date when you want the course to expire.
Choose the participants you want to set or edit the expiration for by checking the box to the left of their name in the list. Click on the ”Change expiration”-button at the top of the list and choose either the ”Set expiration”-tab or the ”Adjust expiration”-tab. When you’ve entered the information, click on "Change to set/edit" the expiration.