RESERVATIONS AND CHECK-IN PROCEDURES

The following conditions apply for passengers who travel on Cathay Pacific or Dragonair GV2 fare products (i.e. for a minimum of 2 passengers):
All passengers must have their booking/reservation under the SAME record locator (booking reference).*
Passengers in a different record locator (booking reference) cannot enjoy the adult share twin/single room supplement price and will have to pay the single traveller price.
All passengers under the SAME record locator (booking reference) must check-in together or be rejected for boarding. All passengers under the SAME record locator (booking reference) must travel together throughout the whole journey or be rejected for boarding. Under no condition will passengers be allowed to board separately.
*Record locator refers to the airline reservation booking code. Except for single travellers, Cathay Pacific Airways and Dragonair requires passengers who are travelling and check-in together under the same package (which is a GV2 fare for a minimum of 2 passengers) to make bookings under the SAME record locator (booking reference).

http://www.cxholidays.com/chl/r/faq/packages