Write /click "button name" in Click2Cast in the macro field.
If you don't know what the button name is you can find out using this macro:
Simply run this when you mouseover your button and it'll output the button name in chat.
@mrfantomex: do you mean modified clicks (alt-right click) or keybinds? I meant to put my Poly macro in C2C instead of just the spell cast after what Ajuga said, but forgot to. Are you saying that what he says to do doesn't work for you?
@yutt: Excuse me? Clique is far from dead and this isn't dead either. What needs to be fixed exactly? Besides just learning how to use macros and forgetting to try it, I haven't had any issues with this addon.
I've been unable to use Faerie Fire (Feral) for a long time now. I'm certain I reported it at some point in this thread. Also, macros don't seem to work. At least a Faerie Fire macro I set up attempting to work around the ability itself not being usable.
Ideally, I'd have conditional macros setup for different abilities/items based on the form I was in.
I can provide more information/tests if needed, I just need to know what would help the maintainer resolve the issue.
Unfortunately, having to put macros on the bar in order to use them in Click2Cast rather defeats the point of the addon, if you ask me. My goal has always been to reduce the number of on-screen buttons (especially on my healer toons) to an absolute minimum.