Is it possible to stretch the last row to occupy the white empty space, so that the grid cover the whole space available? See please the attached screenshot
You can set custom row height using minHeight property (https://api.daypilot.org/daypilot-scheduler-resources/). However, it doesn't calculate the value automatically.
In order to avoid the white space, you can use heightSpec: "Max100Pct" instead of heightSpec: "Parent100Pct". This way the height will be reduced if the content doesn't fill the available space.
See also: https://doc.daypilot.org/scheduler/height/