To display the To-do List view, press the view toolbar button, or choose the → menu item.
To reschedule a to-do, right click it. This will bring up a context menu. Choose the or menu items and select the new date from the calendar now appearing. The to-do is now copied or moved to the selected date. Alternatively, if the main panel holds a To-do List view, just right click the column Due Date/Time. A calendar will appear instantly, allowing you to set the new due date.
To edit a to-do, right click it and choose the menu item.