To change the product order in an online store using Shopify, you can follow these steps:

1. Log in to your Shopify admin dashboard:
– Visit the Shopify website (www.shopify.com) and log in using your credentials.
– You’ll be directed to your Shopify admin dashboard.

2. Access the Products section:
– From the admin dashboard, click on the “Products” tab in the left-hand menu.
– This will take you to the products management area.

3. Choose the product collection or category:
– In the products management area, select the collection or category that contains the products you want to reorder.
– If you haven’t created collections or categories yet, you can organise your products by creating them.

4. Reorder products manually:
– By default, Shopify allows you to manually reorder products within a collection or category.
– To change the order, click and hold the product you want to move, then drag it to the desired position within the list.
– Repeat this process for each product until you have the desired order.

5. Reorder products automatically (if applicable):
– Some themes or apps may offer automatic sorting options based on certain criteria like best-selling, newest, or price.
– If you want to reorder products automatically, look for an option in the collection settings or within the app you’re using to manage the collection.
– Select the desired sorting option to automatically reorder the products based on that criteria.

6. Save the changes:
– After rearranging the products, scroll down to the bottom of the page and click the “Save” button to apply the new product order.

7. Test the product order:
– Visit your online store and navigate to the collection or category where you reordered the products.
– Ensure that the products are displayed in the new order you set.

Please note that the specific steps and options may vary depending on your Shopify theme, installed apps, and the version of the Shopify platform you are using. If you encounter any difficulties or do not see the relevant options, consult Shopify’s documentation or reach out to their support team for further assistance specific to your installation.