it is indeed - you can get some insight reading the vsftpd.conf.5 file as it has a lot more options than the standard vsftpd.conf file. i think these two lines will jail users to their home directories.
Code:
passwd_chroot_enable=YES
chroot_local_user=YES
and you'll need to create the users with adduser and also add their names to the vsftpd.chroot_list file.