You can do this with a security role and a workflow.
Assign basic access level for the write privilege. This access level gives a user write access to notes he or she owns. Remove delete access.
Create a workflow that will be executed when a note is created. Check if the note is added to an incident (Check condition: regarding(incident) incident contains data). If the condition is true: Assign the note record to another user (e.g.
administrator).
Jan
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