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

       /OWNER=owner-name

    Specifies the name of the owner of the account. You can use this
    name for billing purposes or similar applications. The owner name
    is 1 to 31 characters. No default owner name exists.