Library /sys$common/syshlp/uafhelp.hlb GRANT, /IDENTIFIER, Parameters  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 id-name

    Specifies the identifier name. The identifier name is a string
    of 1 to 31 alphanumeric characters that can contain underscores
    and dollar signs. The name must contain at least one nonnumeric
    character.

 user-spec

    Specifies the UIC identifier that uniquely identifies the user
    on the system. This type of identifier appears in alphanumeric
    format. For example: [GROUP1,JONES].