Voting-based LED control?

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hi everyone,

i'm using arduino yun , wondering how should approach voting-based led control.

let's there 2 leds attached arduino, red , green. , there 3 users controlling them. leds controllable through webpage.

here's catch:
when user #1 tries turn on green led, notification sent user #2 , user #3 ("user #1 wants turn on green led. yes or no?"). if user #2 , user #3 yes, green led turned on. however, if no, green led won't turned on.

any suggestions on how can approach this?

thanks lot! :)

quote
and there 3 users controlling them.



do have 3 different arduinos or 3 buttons on 1 arduino?


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