Managing app passwords
Clicking on the Create and manage app passwords link opens a new page and lands you on the App password tab. In this page, you can see the app passwords you have already created, delete any that you have previously created, and create new ones. When you create a new app password, remember to make note of it and keep it in a safe place.
You may find that you need an app password if your company has initiated Multi-Factor Authentication (MFA) and you find that your preferred authentication method doesn't fire you into certain applications, such as InfoPath:
If you lose your app password, you cannot retrieve it from this page. You can only delete it and create a new one, so don't forget to note down your password when you create it and keep it in a safe place:
Click the up arrow on the bottom-right corner of Settings when you wish to collapse it.