If you have any pre-built green screen graphics, you can import these assets into a project and apply the “Green Screen filter” to key out the green background.
Additionally, you can explore Scenery's stock media library to search for green screen backgrounds.
Steps to apply a green screen filter
Import a green screen asset
Navigate to the transitions, effects, animations panel
Select the effects tab
Scroll down to green screen filter
Drag and drop the filter onto the green screen asset
Adjusting the filter
In case you need to make any fine tune adjustments, you can select the filter and adjust the properties of the filter within the right-hand panel of the timeline.