On either surface: Add memory, Edit memory, Remove memory, Version history, Clear all.
Org types: About people, Feedback, Project, Reference. Clear all on the org page does not touch anyone’s personal memory.
In chat you can still say “Remember that we don’t call on Fridays” — Settings is where you review and prune.
Memory
What Rivvi remembers — org-wide in Settings, personal in the account menu.
Two memories. Do not mix them up.