Step 1: Go to Account and click on ‘Setting’ to select ‘Address Book’
Step 2: Click ‘Edit’ button at your preferred address. Click and slide the button to the right to pick the address as your default address; defaults can be selected for shipping address and billing address
Step 3: Click ‘Save’ button and your preferred address has now become your default address for billing and delivery.
Note: Find out more on how to edit your shipping address and how to select correct label for your address.