What is a Vault Admin?
A Vault Admin is a User with the highest administrative role within a Vault. They are authorized to take decisions on the Service, the Subscription Plan and Authorizations. A Vault Admin has unlimited permissions on the content of the Vault, roles & users and reports.
The Vault Admin can invite other Vault Admins and create Project Admin, Content Admin and Guest roles. These three last roles can be granted certain permissions.
The image below shows which permissions can be granted to the different role types.