I have been integrating the calendar into an existing ToDo list.
When the ToDo is completed (DateDone set, Status Done) it shows up on the DateStart day of the calendar all views. Your documentation advises that it should be showing up on the Date Done. The field I use for this is named DateCompleted, so there may be some change I need to make due to this.
Can you point me in the right direction as to where this is controlled.

You should be able to just map your "Due Date" field to the "DateStart" field object on the "Source No 2" layout, and your "Date Completed" field to "DateEnd". You also need to set the source number (2, unless you've changed that) into the $$sc_SourceForToDo variable in the "Load Calendar Settings - On Startup --- Edit Configuration Here" script. If you've already done those things and you still can't figure it out, send your file to me at [email protected] and I'll have a look. -Jeff