The reminder window automatically appears if one or more tasks are due or if you want to be reminded of tasks before. You can delay individual tasks, selected or all tasks in the reminder window or be reminded of them later. To do so choose the desired point of time and confirm with the button "remind again". If you do not want to be reminded of the task again confirm with the button "close task" or "close all", to close all due tasks. With the button "open task" you can directly open and edit a task.