To use Chrome Extension go here to add the extension: https://chrome.google.com/webstore/detail/authenticator/bhghoamapcdpbohphigoooaddinpkbai/related
Now login at Office.com top right click on your user select "View Account"
Look for "Security Info" click on "Update Info"
Click the "+ Add Sign-in method"
Select "Authenticator" then "Add"
Now select "I want to use a different authenticator app"
Now go to this link and follow the steps:https://authenticator.cc/docs/en/quickstart
When you get to the part where your going to click the box with a line thru it go back to the tab where your logged in to Office.com.
Now click "Next" and you will see a QR Code now click the box with a line in it and copy all the QR Code on the left.
Any issues please reach out to itsupport@dogtopia.com.