(1) The classification of a user by the system task, such as security officer, security administrator, programmer, system operator, and user. Each user class has a set of special authorities depending on the security level of the system. The user class determines which options are shown on the IBM-supplied menus.
(2) A z/VM privilege category assigned to a user of a guest virtual machine in the user's directory entry; each class specified allows access to a logical subset of all the z/VM Control programme (CP) commands.