New option request about shared notebooks

[Jaack 8]

I know that when I decide to share one of my notebooks, I can select various options, setting up permissions for invited people. I think it should be a good a idea to add an extra option to those ones: the option to let invited-to-notebook people create new notes, but not edit existing ones. I hope everyone reading to understand what I mean, if not I can try to explain better because my english's not so well.