Once you install our Algolia BC app, the InstantSearch code is added to your store using BigCommerce Widgets & Scripts. Then you can either:
1. Update Autocomplete or InstantSearch code from within our app in the search settings tab (https://www.algolia.com/doc/integration/bigcommerce/search-settings/customization/). However, please note there are character limitations on the amount of code put in place by BigCommerce scripts html constraints (65,536 characters).
2. Further customize the plugin/UI using custom hooks. Using hooks is a good way to prevent hitting the character limit and will also be useful when a new version of Autocomplete or InstantSearch is released for the BigCommerce app, helping with code upgrades to the new version.