In our NSW DoE Canva setup (via SSO), staff can’t create new teams — this is managed centrally as part of our overall ecosystem design.
Canva’s permissions and ownership structure works quite differently from platforms like Google or Microsoft. In Canva, designs and folders are owned by their creator, and there’s no quick way to transfer or share ownership. While ITD Admins can transfer all assets from one user to another if required, this process is uncommon.
There is no risk of losing access to a shared folder when its owner is removed from the team. If a design or folder has been shared with other members, access will remain even after the original owner is removed (which itself is a manual, admin-level process).
For important shared spaces, like an Office or Executive folder,  it is recommended to add multiple members to ensure ongoing access (including the school's principal). The only difference between an owner and a 'Can Edit' member is that only the owner can delete the item. 'Can Edit' members can still move, edit, add to, and share access to designs and folders, but they can’t delete items owned by someone else.
In short: Canva files and folders live within the team but are owned by individual members. If a member leaves, their content stays within the team.
You can also create a class (group) for sharing designs or folders, though this is really only necessary for larger groups (around 15–20 or more staff, such as a whole-school group).