Admins own a space. They can revise its definition, attach roles to it, grant any role to anyone, declare what the space maintains, and decide what appears on its page. The admins named in the root definition are trusted by construction; a further admin can be added later, but only by an existing admin.

The founding admins cannot be removed, not even by themselves, so a space can never end up with nobody in charge. An admin added later can be removed by another admin, or step down.