Use this setting to adjust how much extra space is left at the end of the SEcondary Y-Axis beyond the max value. Enter a decimal value between 0 and 1. Examples:

• 0: The y-axis will end at the max value of the series, e.g., if the max value in the series is 500, the y-axis will end at 500.
• 0.25: The y-axis will leave extra space that’s equivalent to 25% of the max value in the series, e.g., if the max value is 500, the y-axis will end at 625.
• 1: The y-axis will leave extra space that’s equivalent to 100% of the max value in the series, e.g., if the max value is 500, the y-axis will end at 1000.