Decision Box

Hey Guys, i'm undergoing a university project and have encountered a problem creating my application. Basically i have to keep a log of tasks completed by a student for a certain event and if a task has not been completed by a certain date they will be withdrawn from the event However it is ultimately at the discretion of the event organisor so i also need an override function.

I was thinking about using a checklist features to log the tasks and a decision box to perform the withdrawel function but really have no idea what to do. any help will be appreciated.

Thanks !