Unsubscribe only for specific lists

Good morning to all of you!
my client tells me the function to create many lists ( one for each model saved , because there are several customers under him ) , and so far no problems . Problem comes when the user in a list to make a click unsubscribe in a newsletter ; he will be deleted from that list and any other list in which is included . there is a way to unsubscribe a user from a list and leave it intact in other lists ?

many thanks


My friend, the answer is here Unsubscribe from single List