Here is what I did.

Open up your wow clients and keyclone and get them going. Lets pretend im running 2 druids. I am going to bind my hurricane ability to my 1 key for both druids.

Now, go to keyclone setup and go to the general section of setup.

In the middle of the window there is an option that says pass mouse click hotkey. It has a typical keyclone textbox to the right where you can click in the box and choose whatever key you want. This is the key youre going to press when you want to tell keyclone to get ready to pass your click. I set mine, for testing, to the quotation mark on my keyboard ( will likely change it when I use this feature more).

So, I have my pass mouse click hotkey bound to quote and my hurricane ability bound to 1 on both clients. Here is what I do now.

I press my 1 key. This opens up my hurricane targeting reticle on both druids right? Now, I click my quotation mark key. This tells keyclone you're about to pass a mouse click. Then I go to my main window and click like normal, as if i were targetting the spell. It will then go to each client you have open (i think it needs to be visible (i..e no minimized) but i have to double check this) and clicks the mouse on those clients as well, finally cycling back to your first window. So there is a bit of a delay where you will NOT have control of your computer (because its changing focus to each client and clicking).

Lastly, I click my quotation key again to go out of "pass mouse click" mode or whatever you want to call it.

Hope that explains how *I* got it to work at least.