First, go to your Account Settings page by clicking your name in the bottom left corner and selecting 'Account.'
From there, select 'Company'. Now you can either scroll down or select 'Locations'.
From here, you can edit the specifics of your existing headquarters address, but you can now select 'Add New' if you want to add a new warehouse location.
Now you'll have the option of creating a new Physical Address or adding a new Mailing Address (If you'd like to display an address that isn't your HQ).
If you'd like to find out more about where your addresses will show on your materials, click here.
When you're ready to add a new Physical Address, click 'Add'.
Next, add in all the required information and click 'Save'
You can remove, edit, or mark the new locations as your headquarters.
If you'd like to add a Mailing Address, go ahead and click 'Add' under Mailing Address.
Next, enter the PO Box or other Mailing Address you'd like to use and click 'Save'.