Initially 'Red push buttons' are with contestants & green push buttons with anchor.
When anchor asks question, the push button unit pressed first any one of the contestant, lamp glows green (which was initially red).
If balance contestants try to press push buttons it has no effect
First pressed push button will be identified as his lamp glows green & balance 7 contestants lamps remain Red.
To ask the next question, anchor will press green push button in his hand which will reset the system & will change all lamps to red again. Next question can be asked now.
