Make sure you are on the correct device page _ Not Project Level. I also auto-join a new join number to make sure I don't screw something up. Then look over in the SB window where the grahpics and everything is. In the feedback & logic area you can program the macro.

In the same place you would do it if you were programming on a graphic-button, you just have to have the hard button manager open and the button you want to program selected.