Allowing join by link

In order for teachers / pupils to join by visiting the join link Allow joining by link under Students > Add Pupils, or in the case of teachers, under Teachers > Add Teachers (for administrators only)..

Once this is checked, anyone visiting the link can join the corresponding class and / or school.

Joining by link is convenient and simple enough to be used by children, however the flip side is that anyone using the link can join your class / school. Consequently, as soon as everybody who needs to join has joined, Allow joining by link should be unchecked. Once joining by link is allowed, it will last for 7 days, after which joining by link will be blocked until the box is checked again.