I don't even think the General can shackle 3 people at once.
He can, in my very first try on him, we stood all on one spot and he shackled all of us ^^
I just ran this for the first time and we had three people get shackled at once. I didn't realize that the shackle was aoe, does anyone know approximately how far from the target people are effected?
I estimate about 2-4 m radius