The virtual background feature allows you to display an image or video as your background during a Zoom Meeting.
Click on the arrow next to Start/Stop Video and choose "Choose virtual background". Browse for the file you want to use by clickin on the plus-icon. Further instructions: https://support.zoom.us/hc/en-us/articles/210707503-Virtual-Background.
I have used this feature in Zoom meetings to add a background picture
Joni Liikala, Opetuksen IT-palvelut