Robin2:
I thought it would be good for the OP to do some of his own thinking
It seemed pretty clear from the OP's sketch that what he wanted to do was WAY beyond his current programming capabilities. Trying to get from there to what he was describing would take quite a while as an educational exercise.
(And sometimes I just like to write code for fun.)
It will be interesting to see if he can put together the pieces I wrote and make a working sketch out of them. And I'm guessing that random wagging of 10 servos was not the ultimate goal so there will probably still be plenty of learning opportunities before the goal is reached.