Yes, editorial tasks can be edited. To do this, select the task you want to edit by clicking on it from the editorial calendar or from the edit sidebar of the post.
The task editing window will open where you only have to enter and save the desired changes.
Note that here’s a couple of situations in which you’re actually “editing” a task:
- In the editorial calendar, you can drag and drop tasks from one day to another. Therefore, it’s possible to change a task’s due date.
- If the due date of a task depends on a post’s publication date (for instance, “task X must be completed three days before publishing post Y“), then rescheduling the post also moves the task around. In this particular case, though, the task is not actually changed—it still has to be completed “three days before publishing the post”, but this deadline changes as the post’s publication date changes.