Is it possible to book a transfer in Dubrovnik in advance?

[Jedi_1_6]

I coordinate international student programmes, and we are planning an educational seminar in Dubrovnik this winter. As students will be arriving from different countries at different times, we need to arrange a convenient way to pick them up from the airport and take them to the campus. Does anyone have experience with group transfers in Croatia? What kind of transfer did you use?