The options for Major Major are controlled by the Admin program. Here is the main page of the Admin notebook.
The list manager itself is a text-mode application. Most people are likely to run it minimized or even detached, so that it does not take up space on the screen. If you do leave it visible, you will see (optional) log messages.
You have the option of local or remote administration. For example, you can let Major Major run on a server machine, but control it from your desktop computer.
Each list you host can have its own default language. The language for the administrator program does not have to be the same as any of the list languages.
You can host any number of mailing lists. Each list has its own separate set of options.