[Mailman-Users] general subscription and removal

[Klara Schirova]

Hi,
I am administering around 50 mailing conferences under  Mailman 2.1.5. 
How can I easily subscribe/remove a person to/ from other mailing lists 
for which he wants to be/is a member? So far I have done so manually - 
by a/ subscribing the person to each list separately b/ listing the 
person´s other subscriptions and unsubscribing him from the lists one by 
one -  but this is very time-consuming.
Thanks a lot, Klara