Annexe help please Help

2sounds

Hello to everyone

I have a NR balmoral awning and I would like to put 2 annexes on to it. I bought a full size annexe for one end and that is fine but when I bought a small annexe for my son to sleep in I found that it would only fit on the same end as the full annexe, now
I know that on a Nr Pullman annexe the sides are free from the rail on caravan but the balmoral annexe side connects to the caravan rail so this means u have to buy the right side annexe is this correct. Any help on this would be great. I am new caravan owner
and a new cc member