Hi...we plan to use train from changsa to zhangjiajie, we prefer to buy a soft sleeper ticket.

We are 5 person ( 4 adult ( 2 woman and 2 man) and one girl). Is possible for us ( 4 person ) in one compartment ? And for the other person ( 1 person : man) to get the compartment beside our compartment ?
How the soft sleeper regulation ? Is they separate woman and men compartment ?

Thanks