Macro to move messages in Apple Mail, to replace Mail Act-On?

This is where I am now:

As you can see I have found my way into what I assume is the panel for creating a macro for my "Other Stores", but... I have no idea what to do next.

When I click on the little green "new action" button, I get this:

... and I have no idea what to do next.

Have I mentioned I thought this would be easier?

<sigh>

--PS