
The Link Collection setting in PFCG means that the folder, along with its entries, is rendered as a collection of related links, which belongs to the currently selected folder and which is displayed in the lower part of the navigation panel.
You can define link collections on the Menu tab page in PFCG if you select the relevant folder, choose the Other Node Details pushbutton and select the option Link Collection in the Folder Options field.
Typical names of a link collection are You can Also, See Also, Create New or Services which is then a collection of links with this functionality.
Note that link collections are displayed on the navigation panel for the selected folder. When clicking an entry in a link collection, it is always started in an application window.
(Link collection)
A folder that is specified as a link collection is always a child folder belonging to a parent folder. A link collection belongs to, and is displayed for, a folder and all of its entries. A folder can have multiple link collections.
One speciality of link collections is the way that they are propagated down through the navigation tree. A link collection on a folder at any level of the navigation tree is also visible for all child folders. If there is more than one link collection for the same folder with exactly the same display name, the collections are merged.