The following instructions are for adding SMS as a factor for Okta Multi Factor Authentication. You will need to have read and completed the initial instructions at Multi Factor Authentication (MFA) Setup for Okta before completing the following instructions.
Instructions
To Setup Google Authenticator watch the video link here: https://youtu.be/m9pBHxHyFdM
You can continue to add other factors by following the instructions via the Multi Factor Authentication (MFA) Setup for Okta page.
Trusting Your Device
Once you have set up your Google Authenticator MFA factor as above, you will then be shown an MFA prompt each time you sign in to certain services (such as ESS, Compass, Google, etc.). When you are shown the MFA prompt, you will be given the option "Do not challenge me on this device again" as in the following screenshot:
Checking this option means that you will no longer be prompted for MFA when logging in to that particular service on that particular device/browser (ie you will need to check the option the first time you log into each service such as ESS, Compass, Google etc.).
Note that you may still be shown an MFA prompt if you clear your browser's cookies, change between browsers (or devices), or after a period of time.