[Plugin: WP FullCalendar] Alphabetize Categories?

Hello!

I’m using WP FullCalendar along with Events Manager. I’m using it for a school calendar.

Any idea how I can set the drop-down categories in the top left of the calendar view to be organized alphabetically instead of by their ID number?

Any help is appreciated. Thank you!

http://wordpress.org/extend/plugins/wp-fullcalendar/