HP CIFS Server 3.0k Administrator's Guide version A.02.04

Figure 3-16 Selecting a new ACE user or group
IMPORTANT: POSIX ACEs with zero permission can be modified by adding an ACE and setting
the desired permissions for that user or group. A new ACE can be added by using the Add button
on the Windows ACL interface.
58 Managing HP-UX File Access Permissions from Windows NT/XP/2000