You can add due to dates to any note. By "normal tasks" if you mean writing

- [ ] thing to do

in a note, you can write a due date for it yourself but we don't have any special features planned for it yet. We do have plans for a query system which would make the overviews you describe possible, but building the query system has been a bit delayed as we are focusing on stability and ease of use for core Dendron features at the moment.