To schedule a live lesson on Microsoft Classroom, follow these steps:

1. Make sure the classroom is set up with the appropriate subject, context, and description.
2. Review available days and times for the lesson and determine the best time.
3. Set the date and time of the lesson.
4. Invite students to attend the live lesson.
5. Allow enough time for discussions, participation, and questions from the students.
6. Document the lesson and grade student work, if necessary.