there's no need for it at all.  By default, no one has permission to each
other user's Calendar - so they do not see any details of their meetings -
just that they are free/busy/out of office.

if an organisation wants all staff to have no permission, they can just
leave the standard Outlook Calendars default settings for Permission as
"none".

Using Private is for when you HAVE given someone permission to your Calendar
and don't want them to see the detail of particular meetings.

I hope this helps you at least a little bit!

Judy Gleeson
MVP Outlook
Outlook trainer and author of Productiv_IT with Outlook
www.acorntraining.com.au
Canberra, Australia

"I not only use all the brains I have, but all I can borrow." (Woodrow
Wilson)