Vaisala viewLinc-4.1-M211518 - Manual (Page 113)

Chapter 6: Permissions
104 © 2012 Vaisala Canada Inc
About Permissions
viewLinc 4.1 provides several new security options and
introduces the concepts of groups, users and zones. These
features provide quicker methods of configuring permissions
for multiple users and subsequently adding individual user
permissions as needed.
viewLinc 4.1 also provides the ability to add an access
control list to a particular zone then give a group permissions
specific to that zone.