diffuculty adjustement : please eplain logic?
hello,
the new version of xmrig-proxy permit adjust dificulty per worker . 

But i'm not sure understand perfectly this possibility . 

for exemple, my pool requiere a minimal difficulty 1063. 

if i have 9 worker, with aproximatilvy 320h/s capability per worker, what it's the best configuration for this? 

what is the logic for adjust the dificulty?

I hope my text is comprehensible, my english is very bad and i haven't use traduction tools ...