It looks like you've gone back to having Event Date and Time affect Sign-in. Logically, this makes sense, but practically it's a nightmare. It interferes with testing; it interferes with demonstrating; but most importantly it makes it difficult for us to cheat. There is usually at least one person who contacts us the day after the Event "I couldn't sign in... I don't have my certificate wha wha wha." We may want to make this more strict structure optional for situations where admins (or licensing commissions) are going to require that attendees sign-in and out timely or live with the consequences. But for day-to-day situations where there is always someone new to the process who doesn't understand and is going to whine, I think we're better off where the window to sign-in/out starts when admin broadcasts, whether that is before during or after the Event.
