The sticky thread by Mercurio has a lot of the macros in it.
http://www.dual-boxing.com/showthread.php?t=32633

Toned also has a ton, in this thread.
http://www.dual-boxing.com/showthread.php?t=32456



Basically /Click still works, in that it will click as many buttons as you want it to.
However, only a single (the first) castsequence that is clicked can fire off.

So you can build double sets of macros.
The first is your castsequence.
And the second is your proc abilities.

Or alternatively, build two castsequences.
And alternate between the two.

Those two methods, seem to cover every class rather well.