Click the E-COMMERCE button from the main menu, then choose FREIGHT / SHIPPING fees in the Delivery / Freight section.
From here you can quickly set up a Domestic, International or Click and Collect option.
Once you have set up your basic rules and saved, you can go back into the option to create more advanced rules. View more about custom/advanced freight options here.
You can also use the copy icon next to the freight rule to duplicate an existing freight rule, which you can then modify as needed.
There are also advanced Live Pricing Integrations and Courier options available, or you can set up a custom freight option via the Setup Advanced Delivery Option button.