Turn 2 - Allagan ROT

[Traison]

I've only attempted Turn 2 a few times.

Can someone explain the stacking method? I thought it always had to be passed around?

If everyone has the Rot debuff, once they all stack, as the debuff wears off it will take care of it self as long as you have at least 5 people stacking up. You just have to get to that phase of all 5 people having the debuff, before then if you stack you will wipe.