Adding notes option in appointment screen/page

Hello, would it be possible in the future to be able to click on an appointment time and have the option to type in a note or reminder vs having to block off as an unavailable appointment time and put the note in there. when we do that, it is seen as an unavailable time and that is not the case. I’d love to be able to click on an appointment slot and put a note or message in there:). Thank you for considering