How does "Daily Down Time" work?
"Daily Down Time" allows you to block a percentage of your available time - so people can't schedule meetings with you.
If your calendar is not busy enough (under Daily Downtime threshold), CalendarHero will continue offering time slots on that day. Once you have too many meetings on that day, we'll stop offering the day all together. We continue offering any timeslot on that day until the day is too busy (as determined by the threshold).
Update your Daily Downtime settings from Settings > General Settings: