...
- To define list ownership, click the Advanced link and fill in the rest of the form.
...
Private Lists
Consider only making lists private that are used for internal purposes only. When recipients try to unsubscribe from a private list by clicking the unsubscribe link, they will only see public lists and cannot unsubscribe from individual private lists. The only way recipients are unsubscribed from private lists are when they unsubscribe from all communication (global unsubscribe).
Removing Prospects from Lists
...