There are two different types of lists in the service structure:
standard-list:
 simple list with title and metadata ( example)
 example)
 thumbnail-list:
 list with image preview for facts of the services "image" and "slideshow" ( example)
 example)
If you want to allow users to choose between standard and thumbnail list, you need to enable this option. By doing so, users are provided with a drop-down menu as soon as they create a folder.
 
 In order to enable the thumbnail list option, proceed as follows:
 |1| Choose "Interface from the main menu.
 |2| Click on the "modify"-button in the row "Define list columns".
 
 |3| Click on the "list"-button in the row "Structure".
 |4| Click in the checkbox in the row "Thumbnail list".
 
 

 
 
|5| Finally, click on "Save changes".