If you use Google Calendar, Outlook 2007 or newer, Apple Calendar, or another program that supports the iCalendar format, you can 'subscribe' to your BlueFolder calendar.
Your calendar program (Google, Apple, Outlook) will download your calendar events from BlueFolder and display them in their calendar. For example, if you're using Google Calendar and you want see your BlueFolder scheduled assignments/appointments in Google, you'll want to leverage the BlueFolder Calendar Sync feature.
To learn more about the iCalendar format, visit the iCalendar Wikipedia page.