You can add a section to your product pages that recommends related products to your customers. This can help to boost sales, as it allows you to show your customers what kinds of similar products are available, increasing the likelihood that they'll find what they're looking for.
To enable related products do the following:
- Open Theme Editor (Shopify Admin > Themes > Customize), select 'Product Pages' from the dropdown located in the top area.
- In the sections tab click on 'Related Products' section and make sure that 'Enable Related Products' checkbox is active.