I would like to be able to start a workflow when someone registers for an event, based on the date of registration - so, they get their confirmation email upon registration, then one week later they get a follow up, and a week after that they get a second follow up. Ultimately, you would want this to flow in both directions - based on the date of registration - and then based backwards on the date of the event (a month before, a week before). But for now, I really want to be able to start a communication flow with people as they register for events