Our faculty leave the scheduler open so that students can go back and see what appointment they signed up for, however this also would allow them to change an appointment at the last minute. It looks like there is currently no way to lock the scheduler down except for hiding it completely (using Hide or the Restrict Access dates).

On assignments there is an additional set of dates for "Availability" which restricts when a student can make submissions/changes, but allows them to still see what they've entered. We'd like to see similar functionality added to scheduler if possible.