At the same time that Marcus, Mrazivý, and Roxene were taking on the challenges on their own eleventh floor, so were the other groups.
Unlike them though, the team that James was leading did not end up separated from the start and were instead brought into a large circular room with multiple doors in it that each contained a serious of different trials for them to overcome.
In order to clear the floor, they would have to complete each of the trails which forced them to work together.
Some were similar to Marcus' trail where they needed to learn a new skill or skills to get through. While others focused more on leveling up skills or increasing their application of one.
It was certainly difficult but working together they managed to complete most of the trials, and only had one left before the large door at the front of the room would open and allow them to proceed.