Easel supports sending G Code commands directly.
Go to the Machine menu - > Advanced - > Machine Inspector button -> Console field and try that.
It’s not a macro, but at least you wont have to switch back and forth between Easel and UGS.
I keep a Sticky Note open in my computer’s background and copy and paste the commands.
Anyway, I still vote for native probe support in Easel or Macros; or both! 