This is where contestants chat and talk to each other. Just like in casting there will be things to collect, but not keys.............stones, evolution stones that is 3 times a day a stone will be posted, it will look like this

------------STONE--------------

To collect the stone simply be the first to comment underneath it. If you collect 5 stones you will be given the chance to evolve. If your Pokemon can't evolve you can still collect the stones to stop your rivals evolving!