https://www.easyterra.com/faq/can-i-change-the-dates-times-or-locations
Can I change the dates, times, or locations?
Yes, it is possible but you need to remember the 48 hours rule. Changes in your reservation can be requested until 48 hours before the start of the rental.
change the datestimeslocations
https://www.cathaypacific.com/cx/en_TW/faqs/manage-your-booking/rebook-cancel-your-flight-and-refund/can-i-change-the-dates-and-or-flights-for-some-of-the-passengers-under-the-same-booking.html
Can I change the dates and/or flights for some of the passengers under the same booking? | Cathay...
change the datessome offlightspassengersbooking