How do I access the 1 button combos?

[Darkstride]

It's not intended to collapse everything into a 1 button combo. It's mostly for abilities that change into another ability. You can choose to have them as 1 button or separate buttons. You can see a little icon under the ability in the Actions window indicating that you can do this.

[SamSmoot]

The one example of this I've noticed on NIN is that Bunshin, when executed, tuned into Phantom Kamaitachi. It still does, but there's now an option to split the two into separate buttons. Not much of a change.

I was hoping for something like WoW's castsequence macro command which let you chain any number of actions onto one button.