you could get everyone together in a circle and ask the most confident person to start talking about their thoughts, feelings etc. once someone starts to talk openly hopefully others will follow. or you could ask people to write down feeling etc when they are feeling it then all come together to talk about it.
finding other methods of communication would be letters, phoning, e-mailing etc.
hopefully this will give you a idea.
good luck. i know nvq's can be hard. it took me two years to finally finish mine.