The global access rights are configured on the Administrator pane, on the Universe tab (see ch. “Universes”).
Switch to the Global Access Rights. This window looks similar to the one on the task level, with the only thing that differs: the access rights can be assigned only to groups, not to individual users.
In each Cerebro universe there should be at least one account (or user group) with “Full Control” global access permissions. Only this account can perform administrative tasks (creating and deleting projects, users, file storage configuration, etc.).