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

       /MAXJOBS=value

    Specifies the maximum number of processes (interactive, batch,
    detached, and network) with the cited user name that can be
    active simultaneously. The first four network jobs are not
    counted. By default, a user has a maximum value of 0, which
    represents an unlimited number.