QuickPlan for macOS 5.1 starts to support split task by gesture.

  • ⌘ + Mouse Click ("Command" + "Left Mouse Click" on a task) to split the task to two tasks at the day of the point.

  • ⌘ + ⌥ + Mouse Click ("Command" + "Option" + "Left Mouse Click" on a task) to split the task to two tasks at the day of the point, and link the two tasks.