Click on the icon next to the class name ...> Select Management Team> Members page, click Add Members can add the teachers and students again (as the owner of the class teacher, the student is a member)
Click on the class name next to... Icons , Select A Management Team , On a member's page, click Add member to add teachers and students again (teacher is the owner of the class, student is member)
Click next to the class name Icon > select management team > in the member page, click add member to add teacher and student again (teacher is the owner of the class, student is the member)