I have been given a Lascal buggyboard by a friend who bought it but never used it. She is now on holiday and I don't know how to attach it to my Mamas and Papas freestyler buggy. There are just two prong type things attached to the board and I'm thinking that she may have forgotten to give me a crucial piece because I just don't see how it could attach to any buggy. Is there a detachable bit?