Users should be able to enter a comma/space-separated list of email addresses of those with whom they want to share the Notebook with. After space/comma, the email will turn into a bubble/tile/whatever that's called (see Reactor for example of how this is done with JS).
On backend, this list is parsed into separate email addresses associated with users. Users should get an email or notification saying that they have been added to a Notebook.
Users should be able to enter a comma/space-separated list of email addresses of those with whom they want to share the Notebook with. After space/comma, the email will turn into a bubble/tile/whatever that's called (see Reactor for example of how this is done with JS).
On backend, this list is parsed into separate email addresses associated with users. Users should get an email or notification saying that they have been added to a Notebook.