Does Harry Potter have separate context lists labeled @Ginny, @Fred, @Tonks, @Lupin, @Hermione, @Ron or does he put each person in the agendas section?
As I see it he has one of three problems:
1. a cluttered agendas section
2. a cluttered context lists sections
3. or worst of all:
Ginny is on the @Hogwarts list, but Harry meets her in Hogsmead. In reviewing his @Hogsmead list he finds nothing to tell her, moves on, and drops the ball because on the @Hogwarts list is written, "Tell Ginny about impending doom re: dementors"