Plotting some 2019 travels with the family. It's possible some of us might have to change or come back early, but we want to book ahead to grab Avios seats.

Is it possible to cancel/change one person on an itinerary? On cash bookings, I've had this done before where they change the original booking to just include the original people + move the other person to a separate booking. Does this work for Avios too?

Couldn't see anything explicitly about this scenario in the T&Cs.