Add some skin

Hi all, long time I used model pack with big skin collections, and now I think to add some new skins in this pack, but… I don’t know how?
I make vtf, vtm file but I dont know, how to connect this files and model.$texturegroup

Yeah, I saw this, and decompile mdl and what I saw there

$texturegroup skinfamilies
and this 25 times

[editline]10th March 2015[/editline]

oh, f*ck, crowbar show my mistake, thx NotMajora.