Library /sys$common/syshlp/dns$cphelp.hlb change, subtree, group_member, example  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 The following command replaces the old member .pjl.smith with new
 member .jmh.smith in all groups in the .admin directory and its
 child directories.

 dns> change subtree .admin... group member .pjl.smith .jmh.smith