Click the settings icon in the top menu bar and select Settings in the drop-down menu.
Click Course Reminder Emails in the navigation menu on the left, under uLearn.
On the 'Course Reminders' page you can adjust how often course reminder emails are sent to your learners.
When you have finished adjusting the course reminder email settings, click Save.
If you want to send one-off course reminder emails, read How do I send a course reminder email to an individual user?
Important note: Turning off course reminder emails will turn off course reminders for all users.