Dynamically populated module settings
Any relevant parameters that related to these items will be dynamically populated in the module parameters below the list. eg when the title attribute is placed in the list the title panel is shown in the list of parameters below it; otherwise if this item is not in the list then it will remain hidden.
Creating order
Just drag and drop the items in the list in order to change the order they appear in the module. Some layout types require specific ordering in order to work properly. As an example the accordion mode requires the title attribute to be the first in the list or the slideshow using overlay theme requires the image to be the first in the list.