How do I make a Mailing List that sends to several Mailing lists?

Making lists that have as members other lists is called a parent-child relationship for ListManager. The “Parent” has the list names of other ListManager lists as members of the list. When a posting is sent to the Parent all “child” lists get distributed to. There are several settings that need to be configured correctly for this arrangement to work. See Utilities: List Settings: Basic Information: Enable Features for more information.

You may also select several lists to send to at one time when creating a mailing. See Mailings: New Mailing: Recipients for more information.