Scroll the ganttsheet chart area.
Scroll Pixel
* valid value: integer, could be negative
Backward
* checkbox toggle between "Forward" and "Backward"
Scroll Unit
years
halfYears
quarters
months
thirdsOfMonth
weeks
days
hours
minutes
Scroll Count
* valid value: integer, could be negative
Scroll Date
* valid value: format 2022/1/3 or 2022/1/3 12:00:00
Percent Of Viewport
* valid value: number between 0~1