There is no built-in setting within our integration to enable this functionality for the search results page at this time. You will have to customize the Instant Search results page.
Whilst we do not have a complete guide for this that we can share, we can give you some pointers that you development team can use to build your own solution.
To display pages in your search results, you will need to modify the code. All the relevant files for instantSearch are listed here:
InstantSearch Templates
https://www.algolia.com/doc/integration/shopify/building-search-ui/instant-search/?client=ruby#templates
The main files you will need to modify should be: assets/algolia_instant_search.js.liquid and assets/algolia_instant_search.hogan.liquid.
You will need to perform a multi index search to display pages in the searches results. We have a guide on how to do so here: https://www.algolia.com/doc/guides/building-search-ui/ui-and-ux-patterns/multi-index-search/js/