How to add 'Dynamic shadows' on model which doesn't have?

Hello all. Actually I knew the way for it before like… 5 years ago. And I tried to find it again like 1 whole week but failed :frowning:
So, there are some great models to make a pose but they don’t cast any dynamic shadows with anything(Soft lamps, etc)
I slightly remember it can be fixed with Crowbar and add a commend after I decompile model but not sure.
Is anyone has solution with this? I will be so glad if I can get some help.
Thx for reading!