As a Pobble Champion you can manage who is part of your school on Pobble.
On your school dashboard, under “Team”, scroll down your list of your teachers and add your colleagues to your school by providing their email addresses. They will then be sent an invitation email to register. with Pobble.
Teachers can also sign up for Pobble and request access to your school. You will find them on the same "Team" page under "Inactive team members". After approval, they will be added to your school with full teacher access.