What's the best way to switch to Solo Author? I'm probably not going to be able to make the deadline today, but I can't seem to spot anything saying what/if/where we need to confirm that (or do we just claim a date or whatever closer to, and you assume anyone doesn't check in is either switching or dropping out?) You've probably got a lot of emails to sort, so I didn't want to just shuffle a reply to the check-in email in among the rough drafts in your inbox...

Sorry if I overlooked something obvious somewhere on how to do this!