What is the maximum amount of suffering any one person should be allowed?

I suppose there's the question of what's the minimum amount of
suffering? There's the question of what's the measure too. Suffering is
an individual experience after all and it can be valuable.

But what would be the maximum amount of suffering other people - society
and stuff, cultures and systems, governments and organisations - would
allow to happen to one person? That's really the point of this question.