Stochastic Oscillator Stack displays the lines based on 8 different %k periods. When the oscillator is above the 80 level, prices are considered as overbought and when the oscillator is below the 20 level, prices are considered as oversold.
How to Trade With Stochastic Oscillator Stack:
-Wait for all of the gray lines cross above the black line (they also have to cross above the 20 line).
-Wait for all of the gray lines cross below the black line (they also have to cross below the 80 line).
Multi Stochastic Oscillator Stack MT4 Indicator will allow you a lot more info about market then classic one.