Product management from the admin
You create new products from the Shopify admin. You also need to make them available to the POS channel in your Shopify admin.
Make sure that you stock the product at your Shopify POS device's assigned location or the product won't display in your Shopify POS app.
On this page
Add a new product
Steps:
From your Shopify admin, go to Products.
From the Products page, click Add product.
Enter a title for your product, along with additional details.
Click Save.
You can also import or export products using CSV files.