Within arbinon.com, you have an account, which represents your business, all your data, and all your users.
We have designed arbinon.com internally to be multi-user, and we will be adding capabilities to allow you to invite users into your account (your staff or virtual assistants, for instance).
The My Account Profile screen is where you configure Settings and Defaults as well as define your MSKU Template.
The Settings and Defaults are individual settings that govern how the system will "work for you", such as default inputs or your local time zone.
In addition to that, arbinon.com will help you by auto-generating new "Merchant SKUs" (as Amazon refers to them), which is the "SKU" code that uniquely identifies each stock unit in your catalog.