Where is the Door?

When you activate the plugin, it should add a new top level menu item in the left hand admin menu. The new menu item is labeled ‘AAM’.

If the ‘AAM’ menu item isn’t showing, try switching to a default theme and/or deactivating your other plugins and see if it shows up. If it does suddenly show up, then you probably have something that is modifying your capabilities. A lot of themes and some ‘Security’ plugins will automatically remove some of the admin user’s capabilities in an attempt to help you avoid messing with the code of a plugin or theme.