Guide on adding a new model, animation, and creature to HoMMV

Good afternoon! Can anyone tell me how to change the transparency of a unit? Editing the texture with alpha channels doesn't work. And I've been struggling for a week trying to figure out how to do it through the XDB file, but I can't find it... Also, is it possible to apply two effects to a unit at once? In files like idle00.(BasicSkelAnim).xdb Only the first one I specify works...