BuddyPress.org

I’m using Buddypress in my community site. I’d like to add some features so my Buddypress I’m not sure if they are available in plugins.

These are the features I’d like to add.
As the administrator of my site. Under all user profiles I’d like to be able to leave notes on individual users that only admins of my site can read and update. I’d like to be able to leave notes that admins/moderators can read. So like a place holder where I can leave notes with a toggle switch which lets me decide if admins only can read or admins/moderators can read.

With every note dated and in its own thread.
Is this possible to achieve?