Welcome back, legit!~
This is the hardest part of the entire RP. If we can pull this through, then the others can be a breeze. Reason it's hard is because all Pokemaster would have to catch the Pokehumans THEN get to learn about him/her for a post or two. Finally they'll have to regroup up at Maney's position (given that we're ahead of the others). Once regrouped, events would happen again and it'll guide you to move on. So basically:
Pokemasters - Catch your Pokehuman. Now. You can choose to keep him in the ball or to bring him/her out again with his new powers. Then communicate with him/her and get to know about your new 'Pokehuman'. Then when you're all ready, try walking out of the grassy area and bump into Maney and Lysander, grouping there. Since the Pokemasters have seen each other before, it won't be hard to talk again.