Mixing fare class on one booking

[SheikYerbouti]

Is there a way to book online where I can, for example, book 4 people onto a flight, with 2 x choice and 2 x lite fares? Or do they all have to be the same fare class, or I'd have to book 2 separate bookings of 2 ppl each on the same class?

 

[AIRwin]

The latter