Unfortunately, there isn't a module order filter in the current version of the Due Date Modifier.  This is due to limited screen space and additional APIs that would be required.  However, as we are redeveloping the DesignPLUS Next Generation, a module sort feature will definitely be added to the new Multi-Tool.  

Here are a few workaround ideas users can try in the meantime:

  1. If your module contents follow a naming convention, use the Search bar to filter the assignment data by module content titles.
  2. Add a common prefix to all assignments/pages such as "Week # : " so that the alphabetical sort will put them in order.
  3. Publish one module at a time and sort the assignment data by Flags (published vs unpublished).