There are many different configurable options available with the Mailman script. This procedure shows you how to open up the Administration panel so that you can modify the script options. Use the Mailman documentation that is included in the Administration panel to answer any specific questions you might have.
To edit a mailing list:
Click on the Mailing Lists link in the Mail area.
Click on the Edit button next to the mailing list that you want to edit.
Log in to the mailing list with your password. You are now in the Mailman Administration panel and can adjust options as you require.