With a security server such as RACF® installed, you need the appropriate authorization to administer the applications that you select.

To administer an existing set of applications, you must have Update authority. To create a new set at the group or private level, you must have Alter authority. The application definitions reside in specific data sets that require you have the appropriate authority.

See z/OS TSO/E Customization for a description of how data set names are derived for each application level.