Translated version:
Questions:
1. Why is it impossible to change cooldown?
Why cant I set the curent cooldown of ... spell on ... unit to 100%, 75%, 50% or 5%+50 seconds?
2. How can I remove standard buttons from the UI?
(Standard buttons: Move, Patrol, Hold position, Stop, Attack)
3. How can I make a global hotkey?
Answers:
1. Because we do not have access to cooldowns of abilities.
Blizzard just didn't make it possible.
Unless you make custom cooldowns where the cooldown is actually a timer which you can change the time.
2. The attack button can be removed by setting "Combat - Attack # - Show UI" to false.
This way you can change that for every single unit type.
For the others, you can set their location in the same spot as each other.
Here is a complete tutorial for it.
3. You can't.
What you can do is give all units an ability with that hotkey and when you have such units selected, that hotkey works as an ability.
But the best thing to do is make a chat command.
The other is the same about add points with a circle of choose for a extra points for my hero in intelligence, force or agility.
That is not a question.