Different ringtones for different callers?

I got Lenovo P70 dual sim smartphone and my second SIM is from my work. How i can set ppl calling me from my sim 2 to use different ringtone from ppl from sim 1?

First you go to setting+tones+select+tone you want for sim one last activate… Then you repeat the same steps to sim two select different tone last activate

This feature is not available in the presently available android phones.

What about if i make my contacts in workgroup i can't find how to set a tone for group neighter?