there is a file vol1:\common\list.pdf on a nss-volume;
the group named "listgroup" has [rf]-trustee-rights only to
the directory vol1:\common\ !
the file is permanently opened from users of the group "listgroup"

now and then the admin have to overwrite the file "list.pdf" ...
how can the admin overwirte the file unless he has to clear all those
connections who has opened the file?