Adding custom filter

I cannot seem to find out how to add a custom filter, eg colour or manufacturer.

When go to product filters & add a filter, i cna only sort by Price / In Stock / Free Shipping.

Am I missing a step somewhere?

thank in advance

SOLVED: You need to have the Product feature type set to multiple checkbox or select box in order to activate variants, then these become available in the product filters. The documentation really needs some work.

How did you set up a filter for colour? I managed to set it up for manufacturer but can’t get it to work for Colour and Size (both are product options with variations).

I created a feature for both colour and size, set type ‘selectbox’ (tried text and extended), then created a filter for both. None of these filters show up in the storefront.

CS-CART: version 2.0.14