How to add a comment section to your course
To add a comment section to a lecture, open the course to view the list of modules and lectures. On the lecture you want to add the comment section to, click on "Settings" (number 1 in the image).
In the popup that appears, check the "Enable comments" box (number 2 in the image).
When viewing your lecture, students will see the comment section at the bottom of the lecture page.
Students can also reply to an existing comment by clicking on "Reply".
Students can delete their own comments by clicking on the trash can icon (see image below).
The course owner has the ability to delete all comments added to a course.
Note that if you would like to be notified whenever a new comment is added, check the "Send me an email each time a new comment is added in courses that I've created" option in the "Notification settings" section of your systeme.io account.