Use this if you want your Return address to be different than the shipping address you are using for all shipments under a particular user. This is useful if you are drop-shipping.
Click the Settings tab.
Under “Admin Settings” select “User Management”
Select the pencil icon next to the user you want to edit the Return address for.
On the right-hand side of the screen is a checkbox for "Override Return To Address".
Fill out the address details.
Click "Save Changes", you will now have a default return address for that user.