Adding Additional Countries In Holiday Management

I was looking at the Calenday Holiday Management section in Administration, and thought the "Add" would enable me to add a new country file, so as to show holidays from multiple countries (especially if the team is spread out across the world).  It might be nice to see the German Holidays (for example) in my calendar, alongside the US holidays.  

Unfortunately, the Calendar Holiday Management section seems to only allow adding individual holidays.  Is there another way to accomplish this, or do I have to load the additional holidays manually?

(Yes, this is part of my article series.)

Thanks!
--
D.C. Parris, Publisher
Blue Gnu Media & Technology
http://blue-gnu.biz/
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