Locate the shipping settings or shipping methods section in your admin panel. This may be labeled differently depending on your platform. In the shipping method settings, you should find options to set up shipping rates. Look for a section that allows you to define shipping rates based on quantity or weight. If you’re using a specific e-commerce platform, consult the platform’s documentation or support resources for detailed guidance on setting up quantity-based shipping rates. These resources can provide platform-specific instructions and best practices.
In Shopify, you cannot set up rules for flat-rate shipping based on quantity. Instead, you can consider using weight-based shipping rates.
If your products vary significantly in weight, you may need to create separate shipping profiles to group products by weight categories, aiming to approximate quantity-based rates as closely as possible.