From the meeting, click on the "..." on the top bar. This will drop down a list of options > select "Apply Background Effects"
From there, this sidebar will pop up on the right hand side of your meeting. You can select any of the supplied images, including the "Blur" feature (this just puts a blurry filter instead of an image).
If you want to add your own image, press the "+ Add New" button to upload your own photo! If want a Lesley inspired background you can download them here!
You can even Preview your background before you choose it. Other folks in the meeting won't see your video while you preview. It will give you the ability to get situated and pick a background that reflects your meeting or personality. Once you select an image, hit the "Apply and turn on video" button!
Here I am, previewing a virtual background I added myself!
Here is some perspective!
From my point of view...
From Stephanie's point of view...
Now you are working in a space that YOU define!