Business Units are the key to managing security and separating purchasing power within your Organizations account. Organizations can have 1 or more Business Units depending on your specific needs. The primary reasons to create separate "Business Units" over "Item Collections" is to control which users/staff have access to make purchases for your specific scenario. If you do not need to limit staff's ability to purchase certain items, or do not have logical business groupings in your organization to mirror, we suggest to instead use Item Collections for the purposes of separating return items and their billing/shipping settings.
Your first default Business Unit and any new Business Units created afterwards require all fields to be filled out in the About Section. Your Business Unit must also be set to Active for you to invite new users to that Business Unit. A Business Unit's Shipping Preferences are set to use our provided shipping services by default, however you can change them to a different Shipping Configuration/one that you have already created through your Organization page.
We think you may also find this tutorial helpful....
Contact us @ firstname.lastname@example.org