I have created a custom Outlook Holiday file for my non-working holidays.  
The entries created by the custom holiday file all show a "free" status for
the "show time as" field.  Since these are my non-working holidays, is it
possible to create a custom holiday file where aside from adding my
non-working holidays, it also marks those as "out of office".  Since they are
showing as free, my co-workers wouldn't know that I will be out office on
those days and may set meetings on those days.  I know I can mark them "out
of office" individually.  It would be better though if this can be set in the
holiday file.