With settings like on the picture below, You will get a grid with a size of 5 pips during the period of your chart is M1, 10 pips during the period of your chart is M5, 20 pips during the period of your chart is M15, and so on.
Horizontal Grid Lines Indicator for MT4 |
Next, you can try to activate the parameter "Enable Vertical Scale Fix" if you need it.