sharing a notebook - who see the members ?

[cristiano68 0]

I have create a notebook and I am ready to share with some people A B C D. My question is:

Since the notebook is my creation, I can see A B C D, but would they be able to see each other? I believe that to add them, I need their email, or other information contacts. For privacy of the other people I would like to be the only one with the access to their email.