This is an indicator that sits on the candles of the chart, you need to make the original candle or bar colors totally transparent (even the wicks).
The MACD Oscillator will be published in another post but, if you just want to know, there is an up and down threshold being calculated "dynamically", when macd crosses out side of the threshold zone, we consider it as strong signal, when crossing inside the zone band it's a weak signal and if it crosses under the upper zone band or above lower zone band, we consider the cross as not valid.
To get the best result, use this on two time frames WITH it's corresponding oscillator.