- Security > Turn on two-step sign-in: scan the QR code with an authenticator app and enter its code.
- Save the 10 recovery codes somewhere safe. Each works once if you lose your phone.
- From then on, sign in with your password and a code from the app.
The owner can require two-step sign-in for the whole team. You also see recent sign-ins, and can sign out on every device at once.
Where: Open Security (sign in first)