If you are a shinigami, sign up and say where you wanna fight, human world or Soul Society.
If there are any specific people I wanna in a certain location, I will tell you when you post here. And if the numbers are uneven I may have to switch people.
But in general, I will try to make it entirely your choice.
For reference, Bracamarte, Lasconni, and Ginbara will be in human world with a host of arrancar attacking random areas.
There will also be regular arrancars attacking soul Society as well so you can fight those NPCs and kill them if you wish. No going overboard though. Hezro will be staying in Hueco Mundo, the rest of the remaining Espada will be attacking Soul Society.