Your Reminders are located on the left hand side menu:
Due dates are colour coded:
|A reminder is green when the due date is further than two weeks ago.
|A reminder turns red when the due date is today or in the past.
|A reminder turns yellow when it is due within two weeks.
When you have completed the task, you can click the Resolve Reminder button, which will then give you an option to add a document:
You can contact the Mutu support team at any time via email@example.com