Microsoft Certified Educator

A teacher wants a section of the class OneNote where students can work together on a group project, in addition to the teacher-only area for lesson materials and each student's private space. Which OneNote Class Notebook area should the teacher use to plan this group activity?

An educator wants a subset of students in a team to collaborate on a sensitive project without other team members being able to see the conversation or files. Which Teams feature best supports this focused, restricted collaboration?