This setting is to set the price distance (in %) before the next martingale opens.
For example, if you set MartingaleRatioAnchor to 0.001 and MartingaleRatio1 to 0.002, bot will open position 2 when price difference is 0.1% from position 1, and open position 3 when price difference is 0.2% from position 2.
Use this in conjunction with MaxMartingaleLevel to potentially control your drawdown, and still allow enough martingale positions to capture reversal.