HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

No, it doesn't work. When you take an army away from a hero, the focus remains on the hero with the unit. It's understandable that you can control this at a slower speed, but at a faster pace, it's just annoying. P.S. I managed to fix it; I guess I was changing the wrong thing at first.