Selecting multiple calendars

In today’s global team environment where project team members (resources) are distributed in different countries, we need to account for their availability. From my first evaluation of this software, it seems that I can only select 1 country’s calendar. How can I add more than 1 country’s calendar when I set up the project so the resource availability based on different countries’ public holidays are factored in?

You can build your own calendar from several countries if you wish, however, calendar is per project, not per resource, sorry.

Relevant enhancement request in the issue tracker: