Configuring Category Trees
The Category Tree field type is a special type that allows selection of meta-data keywords from a large nested tree. If a node is selected then the parent nodes all the way back to the root are selected. This is therefore useful for classification (e.g. taxonomy on library systems such as Dewey Decimal).
Set the Field Type to "Category Tree" then the options can be managed by clicking "Manage options".
Option management is just the same as other fixed-list field types, however it is possible to select a parent node enabling a tree structure.
When a node is selected, all the parent nodes are also selected and these then are also indexed and become searchable. When searching using advanced search, the user is presented with the same tree selection interface and can select nodes and subnodes. The image below shows how this appears within ResourceSpace.