Diablo 3 - 1 key - 2 skills

Is it possible to bind 2 skills to the left mouse button?
That would be the Primary Skill + one from 1-4 Skills.

So when I press the left mouse button to cast 2 spells at the same time.

I tried with Autohotkey to bind button 2 to the left mouse button, but it only acts as button 2 and doesn't click.

Any ideas?

without using a delay only one of them will be executed

What is the minimum delay required?

depends on your skills you want to use, cleave for example needs more time to *be executed compared to frenzy, additionaly you have to keep in mind that increased attack speed value counts, too.

I would start with a delay of 2000ms and lower it until its not working anymore, there you go.

I play Witch Doctor and I want to throw a Firebomb + Plague of Toads rain with the same mouse button and I kind of made it work.

I bind in game Plague of Toads to key 2 and then used this code in Autohotkey:

RButton:: ;
send {2}
sleep, 100
send {RButton}

So now whenever I press the right mouse button and throw a bomb + toads, so it works.

I would rather have it on the left mouse button, but that makes it not working properly for other actions.

Do you have a more elegant solution?

without hooking ... no, sry

edit: well maybe via hotkey (load/ unload || activate/ deactivate your tiny script)