BiCon is a volunteer run event. Every year a new Team take on the challenge. It seems like a daunting task. But with lots of experience in the community, new organisers can find people to ask for advice.
Also, there are the BiCon Organisers Guidelines, which describe what a BiCon should be and what the organisers are expected to do. These are discussed and altered and voted on each year during a session called the Decision Making Plenary.
The 2012 guidelines are here
there were some big changes in 2013, we will post the new guidelines as soon as we can.
Some very helpful people have also written this