The Admin user and users in the Admin Group are the only users that can open the Admin Tool.
When the Vault server is installed, a pre-defined user named Admin and a pre-defined group named Admin are created. You will be asked to create and confirm a password for the Vault Admin. It is strongly recommended you do this for security reasons.
Neither the Admin nor the Admin Group can have their rights or permissions changed. However, a member of the Admin Group can have their rights restricted to a specific folder. Admin Group does not override an individual’s assignment at a given folder. This allows a user to be part of an IT group without giving them the rights to modify files in a given project.