The Category groups node is used to create and manage attribute groups, which is to say collections of custom attributes for subsets of products.
To create a new category group:
- Click New category group
- Provide a name and a system name
- Save
Click on any group to view the list of fields in that group:

As you may know, you can add content to an attribute category in two ways;
- By adding new fields to the category
- By adding links to reference fields
To add a new field:
- Click New field
- Specify a name and a system name
- If relevant specify a templatetag for this field
- Select a field type
- Optionally provide a description - this description is shown under the product field when editing a product
- Optionally provide a validation pattern and a ValidationErrorMessage - see here
To add links to reference fields:
- Click link reference field
- Select a reference field group and a number of fields
- Click Select
If you're not sure when to do one over the other, please consult the attribute groups documentation.