To add a note for a Task or Habit, tap on the Task/Habit in your Dream, then edit the text within the Note section.

To add a note for an overall Dream, tap on the Dream and scroll to the bottom to edit the text within the Note section.

Tap the Save button in the upper right-hand corner to save your Note's content. 

You can also delete the information written in the Note section of each Dream by deleting its contents.