09/06/2020 – Since this article was published Microsoft have now released an update to Teams that incorporates an Add New button to Teams
How to add the image to the Teams custom backgrounds directory
To set your own custom background, first navigate to %APPDATA%\Microsoft\Teams\Backgrounds\Uploads and drop your images into the folder. Remember to use the highest quality image you have available.
How to set the background when on a call
To enable the custom background when in a Teams call –
- Click the three small dots on the actions menu
- Click Show background effects
- Scroll to the bottom of the list of images and select your custom image
- Click Apply.