I've used the system for two matches so far, BGC and Sharon. I like it, and between the e-mail reminders, the ability to switch to other open squads, remove yourself from the match if needed, it's pretty damn user friendly.
I'm assuming that the MD setting up the registration can set aside blocks or whole squads for mail or call in, or RO's.
I just wondered if the old two weeks prior policy was in place, or if it was up to the MD.