Multi-Factor Authentication (MFA) is a two-step login protocol requiring separate verification from a mobile device to access your account. To enable MFA, simply visit the Password page found under the Settings dropdown. Once there, toggle the Enable MFA button to the 'On' position.
Next, log out of your account by clicking the Logout button found at the bottom the Settings dropdown.
Once logged out, begin the process of configuring MFA for your account by logging back into your account via the Login page. After correctly entering your username and password you'll be presented with an option to configure your third-party device in order to fully set up MFA for your account.