Library /sys$common/syshlp/sysmanhelp.hlb SET, ENVIRONMENT, Qualifiers, /USERNAME  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /USERNAME=username

    Specifies that this user name should be used for access control
    purposes on another node. You can use this qualifier only in
    conjunction with the /CLUSTER or /NODE qualifiers. SYSMAN uses
    the current user name if none is supplied. SYSMAN prompts for a
    password whenever you specify a new user name.

                                   NOTE

       The account specified must have only a primary password.
       Accounts with secondary passwords are not supported.