Hi there Mike
There are people here who are much more acknowledged and experienced on P. Imperators and familiar, huge scorpids like that.
However, some basics stay the same. So here goes..
It is usually a good idea to separate the scorplings when they leave the mother (they prolly/usually molted to 2i already if they decide to fetch for their own). If you dont, they might cannibalize each other, or get eaten by other adult specimen.
In your case, you said they already left the mom, so now is the time. House them like the adults, much smaller though so they can find there food easier. Housing them separately also gives you the ability to keep an eye on individual feeding.
They feed more than adult scorpions, so keep them well fed, moist and warm.
Good luck!
Cheers
Sam
Good luck with them, they might look tiny.. but they are tougher than you think.
on a side note: Emps are communal, so I dont know if you HAVE to separate this species. I do know monitoring their eating habits IS easier when they are separated, so I'd do it anyway.