Important information about Rapid Search filters in general:
You can not modify product data in our settings, Rapid Search can only display and customize your filter options that are based on your product variants or tags in your Shopify Admin.
Adding filters to your pages:
The Rapid Search result page and our filters will be enabled for all themes automatically, while the collection page needs to be enabled manually. You can enable or disable them with the "Search results page status" and "Collection page status" settings found in the Rapid Search admin, Settings, Collection and Search results page menu for each theme separately.
The filter settings found in the Rapid Search admin, Settings, Filters menu, will affect both pages if enabled.
Types of filters:
In the Rapid Search admin, Settings, Filters menu, you can choose which filters you wish to enable on your storefront: Collection, Product type, Price, Color, Brand, Availability, Tag filter, and you may filter for any of the variants you have added to your products in your Shopify admin, as well as create a custom filter based on product tags.
Tag filter, and adding a new filter based on Tags:
By default, you will have one tag filter for all of your tags. You can select if you wish to include all of your tags or only some of them by clicking on the small cogwheel icon next to the toggle. You can either exclude tags by listing the tags you wish to exclude, or you can specify which tags you would like to have a filter for if you select the Show selected tags only option.
If you wish to add more custom tag filters, please see our detailed guide:
How To Add Custom Tag Filters
Please do not forget to either disable your default tag filter or modify its setting to exclude the tags you added into your new filter to avoid duplications.
Variants filters:
Your collections and your search results can be filtered also by the variants you have added to your products in your Shopify admin. This means you can have more filters by adding new Variants in your Shopify admin and enriching them with various Options (i.e. Variant: "Material", Options: "metal", "wood", "ceramic", "plastic"). (For further info about adding variants, please consult this article.)
Color filter:
Clicking the cogwheel of the color filter will allow you to customize how you would like to show your available color palette within the filters, and manage color families. If you select Color swatch as appearance, the filter will show a circle image with the shades of each color family within the filter. If you select "List", the names of the color families will be written.
You can manage color families, which allows you to change the shade visible for the Color swatch option, and you can add custom colors to the families - for example, if you have a color variant called "Barbie-pink", you can add it to the Pink color family.
Important note about your variants:
Variant option names are case-sensitive. Having the variant options "Color" and "color" will result in having two different filters that can be corrected only by bringing the relevant variants to a unique format in your Shopify admin. 
Customizing your filters:
- The filters may be enabled or disabled, dragged and dropped to change their order,
- They can be renamed so that they would appear with a different name in your store,
- And you can customize the filter option sorting mode for each filter. Please note that you can set the sorting option for each filter separately, and some filters have more options than others. (For example, the Brand filter has fewer options than the Size filters).
- In case you have your collection filters enabled, your filters on the search results page would look the same (i.e. if your tag filter is enabled, it will be enabled for both your result page and collection page as well)
- Changes applied in the Rapid Search Admin > Settings > Result page menu will also be applied to the design of your collection page (i.e. if your Layout has 3 products per row in your result page, the collection will have 3 products per row as well).
For all the rest of the settings concerning your result page please see your Settings › Result page menu (Please consult our article on Result Page here.) ...
Contact us if you need help
In case something is not working as expected, you may submit a ticket to us or contact us via chat, and we will be more than happy to assist with your query.
Thank you for using our filters feature, and please let us know how you feel about it!