To classify the items into groups:

  1. Drag each item into one group below.
  2. If there aren't enough groups, click "Add new Group" and a new box will appear.
  3. Press "Submit" at the bottom of the page when you're done.
 
 Item 1
  
 Item 2
 Item 3
 Item 4

 

Add new Group

 Group
 Group
 Group
 Group
 Group
 Group
 Group
 Group
 Group