Correct, you can add several devices. You can have TOTP + U2F devices or just U2F devices or just TOTP.
It's as simple as clicking the button to add another, and walking through the steps. Just be sure to name them in such a way that you can tell them apart. I typically use the identifier on the key itself. It's usually printed somewhere opposite the USB contacts.
It's as simple as clicking the button to add another, and walking through the steps. Just be sure to name them in such a way that you can tell them apart. I typically use the identifier on the key itself. It's usually printed somewhere opposite the USB contacts.
Kyle
1Password