When you enable grading, an assignment appears in your Canvas grade book called Webex Meetings Attendance Assignment. The Webex Meetings Attendance Assignment shows the attendance grade for students based on the grading settings configured in the Setup tab.
Students must join the meeting from the Virtual Meetings tab in Webex Education Connector to record their attendance.
If a student’s name doesn't appear on the attendance list, you either need to manually sync the students or the student needs to launch Webex Education Connector from the course in Canvas at least once.