VMS Help STOP, /QUEUE, /MANAGER, /CLUSTER, Qualifier, /NAME_OF_MANAGER  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /NAME_OF_MANAGER=name

    Specifies the name of the queue manager process to be stopped.
    If the /NAME_OF_MANAGER qualifier is omitted, the default queue
    manager name SYS$QUEUE_MANAGER is used. For more information,
    refer to the chapter about the queue manager in the OpenVMS
    System Manager's Manual.