Groups allow a user to control access to their library items.
 
To create a group, visit the Library page and click the 
Groups button. From the drop-down menu click 
Add. Type a name for the group in the dialog box and click 
OK.
You can create as many groups as you wish. Group names can include spaces.
Associating Library Items with a Group
 
 
By associating items in your library with a group you control the files and folders that are accessible to selected contacts and chat rooms members.
Each group appears as a column in your library items list. This column controls the availability of each library item to the group's associated contacts or chat rooms.
Key to Icons
Red Cross (default): Item is not accessible to the group.
Green Tick: Item is accessible to the group.
Grey Dash (folders only): Descendent items are a mixture of accessible and inaccessible to the group.
 
By adding a contact to a group you grant them access to the library items associated with the group; those items will appear in search results and your browsable library.
To add a contact to a group expand the 
Contacts pane, right-click on the contact, and select the group from the 
Groups menu. 
Note: The Groups menu will only appear in the context menu if you've created at least one group.
A contact can be a member of multiple groups.
Associating Groups with Chat Rooms
 
 
By associating a group to a chat room you grant all online members of that chat room access to the library items associated with the group; those items will appear in search results and your browsable library.
To associate a group to a chat room navigate to the 
Chat page, right click on the chat room, and select the group from the 
Groups menu. 
Note: The Groups menu will only appear in the context menu if you've created at least one group.
A group can be associated with multiple groups.
 
Public library items are searchable and browsable to all users. Therefore there is no need to associate public library items to a group.
Share private files with select friends and family, and prevent access to the network at large, by creating a group, disabling public access and enabling group access to the library items, and finally adding your friends and family contacts to the group.
Share niche or thematic files with a similarly-themed chat room by by creating a group, disabling public access and enabling group access to the library items, and finally associating the group to the chat room.