You can configure a setting so that a registered user can log in to this machine using administrator privileges.
In the administrator mode, select [User Auth/Account Track] - [User Authentication Setting] - [Administrative Setting] - [Login Allowed with Administrative Rights], then click [Allow] (default: [Allow]).
In the administrator mode, select [User Auth/Account Track] - [User Authentication Setting] - [User Registration] - [Edit] - [Permission Setting] to assign administrator privileges to the registered user.
To assign administrator privileges to a user, select [Permission Setting] - [Administrative Rights] - [Allow] (default: [Do not Allow]).
When the User Box administrator is specified, User Box administrator privileges can be assigned to the registered user. To assign User Box administrator privileges to a user, select [Permission Setting] - [User Box Administrator Rights] - [Allow] (default: [Do not Allow]).