The Create New Document wizard has the following screens which will require you to provide the following information:
This page will require a location and name of a file you wish to add, or if the object will have "no content" simply an identifying name.
This page requires you to select a class from the available list and to set any required property values.
This page requires you to select a "Storage Class", that is a storage location, and to select whether to "always contain current version" and whether the document should be "automatically classified".