In general lineup, we could adjust which ninja use which tools (Armor, Scroll, Ring, etc...). That way we could determine who got the most of initiative, or critical rate (for example).

However I could not understand how it works on Arena, no option for that. And also, in general lineup, when I change ninja and return the previous lineup, the tools messed up. Just how it works in arrangement? By pos? By skill placement (QWER), or what?

I hope someone could understand my point.