Manuel--

I'm still figuring this out myself, but I think what you want to do is:

Figure out WHICH BUTTON and in WHAT MODE you want your Harmony to execute your Macro.

Go to ADD ACTIVITY->Utility->New Button (?I think that's what it is called) -> Follow the menus that will focus down to when/where you want your button to execute a command. But here's the kicker: you can add a SEQUENCE of commands to that button. That should take care of you. Note I DO NOT know how to create TIME INTERVALS between a series of executed commands within the macro.