Well first of all, if you get an X call and they have more than 4 riders, you contact support and tell them you had more than 4 pax and they will upgrade the fare to an XL fare (with a qualifying vehicle) . In answer to your question, what I was suggesting was that the jump seat could probably hold one pax, which would mean that you can comfortably hold 5 + yourself. Perhaps you might consider only taking rides with 5 or less pax. It's a bummer, but like I said, putting more than 5 passengers in that type of vehicle has been reported to be a very tight squeeze for 6 passengers and has also been reported to induce low ratings- Good Luck.