You can access from the link below
Chroma Material is a software based internal chroma key feature available in Drone Designer. It allows to Key-Out Green/Blue background color from the Live or Recorded source(Video/Image). Chroma material has Pre-Process & Post Process options to enhance the final Chroma output in realtime.
This user guide shows user can use Chroma material to key-out the Green background from a live/recorded video source.
Download the Guide HERE (Adobe PDF Reader required)