You can delete to-dos, for example, when they have been performed.
Only canceled to-dos can be deleted.
Open the Delete To-dos window.
On the To-do tab, in the Field field, enter To-do No.
In the Filter field, click the AssistButton to the right of the field to see the canceled to-dos.
Select the canceled to-do that you want to delete and click OK.
After you have deleted a to-do, the program automatically removes it from the To-dos window.