I am planning to fly Lufthansa to MUC and then use Rail & Fly to get to my final destination…

Haven't used it before so after reading http://www.lufthansa.com/online/port...74&cid=1000263 still have a question – the website says "Tickets can be booked for up to five people". Does that mean I can fly alone but buy R&F tickets for up to 5 persons? Or they are trying to say that groups of 5+ passengers can't make a single ticket purchase?

Maybe the German version has clearer terms & conditions but I don't understand German unfortunately.