An Author note is used to keep track of information about a user so that the next time they interact with your brand, and the interaction gets managed in Engage, the person managing the conversation has additional information available. All Author notes are dated and timestamped for easy tracking.
Yes, you can pin any Author Notes to the Author Column. Pinning notes will keep them at the top of your Author column in the Conversation View for easy accessibility. Conversation notes cannot be pinned to the Author Column because they appear in-line within the conversation (center column).
No. currently all of your Author notes and Conversation notes stay inside of Engage unless you are an Enterprise Subscriber with custom data outprocessing features. DGTL Create does have note functionality within its Brand Tab, but these are different from your Engage notes.
You can only edit your own Author Notes for up to 7 days after you left them.