Audio only sessions are great when your students don't have very good internet or when you don't really need to see them.
In an audio only session students can see and hear the teacher but they can only communicate with the teacher through their microphone and the chat. The students do not send video so the teacher cannot see the students. However, the student can turn on their video when as necessary.
First log in to your account and start scheduling your session.
Set the session title and in the type section choose the "Audio only conference" option.
Choose when you would like to schedule the session the session: now or later.
Invite your contacts from a course, previous sessions or messages (it only works for registered users)