When browsing through your tasks in the full window Calendar view or in the Tasks Panel or Calendar Panel, to mark a task as done, you can tick the box with a mouse click. But there’s also an easy way to do it when you have both hands on the keyboard.

To mark a task done:

1. First, navigate to the task using arrow keys.
2. When you’ve selected a task, press Tab to focus on the task’s checkbox.
3. Then press Space to tick the box.