A macro question for the macro peeps!

[Bixby]

No, it's not possible.

Edit: If you have extra action bars you're not using, you could copy everything on one action bar onto several, and only change the macro in the given spot, then use /hotbar or /chotbar to swap from action bar to action bar to action bar and back. But that requires you to press the button each time. There's no automatic way to do it. Here, have a complete command reference.