CyberLink PowerDirector Help

If you want your project to include a green screen effect, you can use the chroma key feature in the PiP Designer. Just select a media clip on the timeline, and then select Tools > PiP Designer.

See Using Chroma Key to learn the complete details of this feature. You can also check out the following video tutorial to see a demonstration of this tool:
https://www.youtube.com/watch?v=ojwuHkAbIXs