If you routinely need to see someone's available time you can add their Outlook calendar to your list of calendars. This will let you see when they are free or busy but not the specific details of their appointments.
Open Outlook and go to your calendar.
Right click on My Calendars, go to Add Calendar, and select From Address Book
Search for the person whose calendar you want to add. Once you find them, click once to highlight their name and then double click on their name so that their name appears in the bottom area.
That person’s calendar will appear in under your My Calendars and you can toggle the view on and off with clicking the checkbox to the left of the item.
What level of detail you see on that person’s calendar is determined by the owner of the calendar, they can set what details they want you to see. The default is set to only show whether a person is free or busy.
