What is the process of creating layered navigation (including category creation and attributes, product attribute types, and product-category associations)?
- First, you need to ensure the attribute is select for layered navigation within the settings of that attribute
- Second go Catalog>Manage Categories> and set the price step (price is by default a layered navigation)
- Go to System > configuration > catalog > expand layered navigation to show product count or not.
- Lastly, populate the attribute (from step 1) in the individual product. For example, you create a pattern for a shirt. Then give it a checkered attribute option.