Documents, binders and concepts can be assigned a category of your choosing. This is done by editing the document/binder in the Browse Files mode and clicking in the navigation menu on the right.
Categories work differently for documents/binders and concepts. See below for a more detailed explanation.
Category of documents and binders
Assigning a category to documents and binders will group those documents and binders in categories on the home page. Documents/binders having the same category will then be grouped together.
Category of concepts
Assigning a category to concepts groups those concepts under their respective categories in the data dashboard of the Assemble Document mode. Concepts that do not have a category will be shown under (uncategorised). This is particularly useful when a document contains a large amount of concepts, which can make the data dashboard difficult to manage when no categories have been assigned to the concepts.
Example of category tabs in the data dashboard