/PROFILE=TEMPLATE[=template-name]

    Identifies which template profile of a security class object
    you want to modify. All object classes except FILE have at
    least one template profile. These template profiles define the
    basis of the profile of new objects. Use the DCL command SHOW
    SECURITY/CLASS=SECURITY_CLASS to display template names. When no
    value is given for template-name, SET SECURITY uses the template
    named DEFAULT.

    Include the /CLASS=SECURITY_CLASS qualifier to identify which
    profile you want to modify.