Trial calendars have the same functionality as purchased calendars.

The only difference is that trial calendars come with three categories and purchased calendars may have 3, 8, 20, 40 or more categories. Trial calendars only allow 100 events to be imported at a time, while purchased calendars allow 500 events to be imported at a time.

Contact support@calendarwiz.com if you need more categories for your trial calendar.