Library /sys$common/syshlp/nclhelp.hlb create, x25_protocol, group  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Creates an X.25 protocol group entity which specifies a number of
    DTEs that make up a closed user group (CUG).

    create  [node node-id] x25 protocol group group-name

    Example:

    create x25 protocol group GROUP-0