just call co.com support which can be accessed under the "contact us" tab at the top right of the co.com home page.

thier bookings are seen by the system as online bookings. you can then go to one of four CTO's or an airport ticket counter to turn in the certs and have your etickets issued. you may also mail in the certs to the address given to you by the agent. ive always chosen to take them to the airport.

my adivce for a family of four would be to put yourself on one reservation. then your wife/husband on the other and then your kids together.

this way, youll get your EUA at the earliest available opportunity and then you can upgrade your sig. other as a companion. the kids can stay in the back.