The following question was asked of me.

"Is there a setting that can be changed on the exchange server so that
people
are not able to see the subject of other peoples' calendar appointments? I
know that individuals can mark their own appointments as private, but I'm
looking for a global setting that would make all appointments private for
everyone."

I don't know why they would want this done. First, can it be done?
Second, what are the implications that I should make them aware of if it
could be done?

Thanks.