blow off valve vacuum diagram question?

Okay I have searching how to on this but I keep getting different answers everywhere. As well, as different diagrams that people have done for this I was just wondering does anyone have a picture of their vacuum blow off valve set up. Because this what confuses me.
even though picture is not clear. He has 2 port on each t connector when I have seen other with just one port of the t connectors as shown in the picture
he is just running a one port t connector on each throttle body. But I see that some take off the oem vacuum tubing while others keep the oem tubing but just tap the hose coming from the crank case but isn't that bad? So I'm just confused, I know it's a simple thing to do but I'd rather do it right especially of what my gtir has been through from previous owners. I want everything running right. So some pictures of your blow off valve vacuum diagrams woukd help to see how this is suppose to be done correctly. Thank you

2 sensible ways really.

1. use the OEM vacuum line port for BOV (3)
 

2. use the 4 balancer nipple ports (in standard form they have rubber blanking caps over them) as in 2nd pic but use decent rubber hose not silicone rubbish & not turquoise color like the pic :-D

^ very good point. It will prevent every single vacuum hose on your engine blowing off on the dyno like mine did

^ lol
Some of the top brand stuff is ok but hard beat quality rubber hose
Some of those neat jap style spring clamps are nice on the vac lines & helps prevent leaks - pipes coming off.