Phillippa,
If you go to the event page through the calendar you can see a list of entrants usin gthe link on the right hand side. This will take you to http://eventor.orienteering.asn.au/Events/Entries?eventId=1&groupBy=EventClass.
Note there are two "events" for the C5D in Eventor and so you will also have to check http://eventor.orienteering.asn.au/Events/Entries?eventId=19&groupBy=EventClass to see the people who entered all 5 days.