Just thought I'd share this... I've always forund the garrison ability (like Call to Arms) button in the middle of the screen annoying... But as a druid I've never been able to get it in my action bar in all forms.
But if you make a marco:
/run DraenorZoneAbilityFrame:Show()
The screen button will pop up and you can drag it into your bar in all forms.
It is a bit buggy, so the button sometimes dissapear before you can drag it, but t does work.