You’ll need a filter app to add filters to the theme. We recommend using the Shopify Search & Discovery app: https://apps.shopify.com/search-and-discovery, which is supported in all our themes.
You can find Shopify’s official documentation for using the Search & Discovery app here: https://help.shopify.com/en/manual/online-store/search-and-discovery/filters
To add filters, open the Shopify Search & Discovery app → Filters → click the Add filter button.
Once you've added these filters they will start showing on live store.
If you don’t see the filters, please go to the Shopify Customizer, navigate to Collection Templates, then open the Collection Section Settings. Under the ‘Filters and Menu Alignment’, make sure the relevant toggle is enabled.
Please feel free to open a support ticket if you need help adding filters to the store.