The programme proper set on the island hasn't started yet, Mark. The first few episodes are introducing potential contestants to the public, who then have to vote for their favourites.
The programme on Tuesday showed 6 boys and the public had to vote for their favourite 3. I think the results will be announced on tomorrow's programme. I assume that the next 2 or three programmes will be similar, until a set number of contestants have been picked. Then the show proper will start.