At first I thought I wouldn't be using People notes, but I found that a great way to use this is for example to write down information about your parents / grandparents or whatever. I went for a ride with my dad last week and he showed me where my grandfather was born, where he lived, where is workshop was etc. Information that will likely be gone one day if I don't write it down.
For me this is very valuable.
Another way I'm using the People notes (just as an experiment at the moment) is to keep kind of a log for each person I'm spending time with, in order to remember what we did and when.
Just some short and brief information (with more details in my actual journal).
For example:
2024-12-01 Me and Gustav tried out the new pancake place in town.
The date I will link back to the journal date.