Would like a lock or finalize feature so notes are not changed past a certain point. Also, it looks like team members all have read and write access to a given note. Would like to be able to share with team, but have edits limited.
Hugo is a static site generator. Your question is OT in this forum.
Search the web for ways to configure user access control in a server.
Or if you are using a third party CMS for the Hugo project, look into its documentation.