I am trying to set a secondary shipping address up
No worries, I'm here to help you set up a secondary shipping address. Let's go through the process step by step:

1. Log in to your account.
2. Navigate to the "My Account" or "Profile" section.
3. Look for the "Shipping Addresses" or similar section.
4. You should find an option to "Add a New Address" or "Edit Shipping Addresses". Click on it.
5. Fill in the details of your secondary shipping address in the provided fields.
6. Save the changes.

Now your secondary shipping address should be set up and ready to use! If you encounter any issues or have any further questions, please don't hesitate to let me know.