From the linked website:
Roommate Requests
We at Exodus International understand the nature of our conference and the financial constraints of many of our delegates. Exodus will provide a service to assist those delegates who would like to take advantage of the lower costs of sharing a room. If you have a roommate preference or spouse, please enter that person’s name on the registration form. Unless you specify a roommate, Exodus will assign a roommate to your room.
If your spouse is not registering for the conference, please contact Exodus before you complete your registration. Non-registered guests must pay the $250 fee for housing and meals for the week.
The Exodus Youth department will assist in assigning rooms to student delegates between the ages of 18 and 25 to the same building and hall.