View this page as https://cs.uwaterloo.ca/twiki/view/Main/AdrianPepperMailmanSimpleUse?mmlist=LISTNAME but replace the word LISTNAME with the actual page name for your list. (Perhaps you have already done that...)
You will probably find it convenient to create a page, or set of browser bookmarks, containing the links mentioned here. The first time you click on one of these administrator pages for a particular list, you will need to give the password.
Note where the page name for your list, LIST_NAME appears in the URLs.