This menu allows you to create a new list and to complete its setup.
Before proceeding to set all the parameters, you have here a very useful tool that you can use if you plan to setup the new list as an existing one: "Copy settings from...". You find this option at the bottom of the screen under the tab "Configuration": just select the list from which you want to copy the settings from the dropdown menu and press "Save"
A list name is a required field.