There are guides.
But I will not write about it or offer any support since it involves using ICS. ICS is bad for support and mixing in the tether only complicates it further. While an expert user can get it to work the problem is that for the non-expert the issues cause the discussion to become a tar pit as the user demands you explain everything or write a step by step. I'll write that all this is written up out there. But I find some claim it's not. What they really meant is they didn't understand the instructions.