When creating courses, you can choose from eleven lesson types: Text, Audio, Video, Web Video, Embed Code, PDF, Assignment, Quiz, Event, Form, and Waiver.
Each lesson type has specific content requirements. For example:
Text lessons require a text field.
Audio lessons require an audio file upload.

1. Text: Description is required for this lesson type.

2. Audio: Audio upload is required for this lesson type.

3. Video Upload: Video upload is required for this lesson type.

4. Video Link: A video URL (from YouTube, Vimeo, or Wistia) is required for this lesson type.

5. Embed Code: Embed code is required for this lesson type.

6. PDF: PDF upload is required for this lesson type.

7. Assignment: Description is required for this lesson type.

8. Quiz: Questions are required for this lesson type.

9. Event RSVP: When created, it is automatically populated with all past and upcoming events that are linked to the course.

10. Form: Questions are required for this lesson type.

How to use forms as course lesson
Learn how to add and use forms for Feedback & Assignments as a course lessons
11. Waiver: Agreement and consent statements are required for this lesson type

Here is an article on how link an event to a course
How to link events to a course
Learn how to link events to a course