By default, Drill Down Timeline PRO will use the default settings for the Secondary Y-Axis value range – start at 0 and determine the max value dynamically based on your data. If this toggle is enabled, you will be able to choose a custom value range for the Secondary Y-Axis scale. Doing so will reveal two settings:

• Min Value: choose a custom start point for the y-axis scale (by default, it starts at 0)
• Max Value: choose a custom end point for the y-axis scale (by default, it’s max value in the series + Scale Adjustment Tolerance factor).