Due to getting a lot of requests from clients to do interviews on location, I looked into using green screen technology to eliminate the difficulties of filming in a small office - i.e the dull backgrounds and lack of space. 

The traditional problem with green screen is the need to light the green screen brightly and evenly to get a good key. Apart from the challenge to light it brightly it also adds another lights to the 3 interview lights. Extra bulk that needs to by carried. The system I opted for is a genius solution from Reflectmedia. (I'm not associated with them in anyway).  

Read tutorial here