The ALMA (50 period) acts as the main trend filter, meaning that long positions are taken above the ALMA and short positions are taken below the ALMA. For instance, the 5 and 10 period exponential moving averages are added on the chart to give early signals to the trend.
Therefore, when the 5/10 EMA triggers a bullish crossover, long signals are taken when price is above the ALMA, likewise, when the 5/10 EMA triggers a bearish crossover, short signals are taken when price is below the ALMA.
Find out optimal values by trying. May not produce accurate results in horizontal markets. Thank you.