To create a Review Showcase/ Happy Customers page, you can follow 2 simple steps:
Step 1: Create a review showcase page
On your Shopify homepage, you click the Online store > Choose Pages > Click the Add page button.
On this page, you move to the Template section > Choose ‘page.sma-reviews-happy-page’ option. Then give this page a title (For example: Happy Customers page) and click the save button.
Step 2: Show the review showcase page on your Shopify store
For people to see this review showcase page, you need to add it to your store's navigation. On your Shopify homepage, you click the Online store > Choose Navigation > Click Main menu > Click Add menu item.
A pop-up box then will appear, you need to fill name for the review showcase page on the name field. On the Link filter, find and click Pages > Choose the review showcase page that you’ve created
All setting steps completed. And here is the result: