Get Keyboard Maestro to open a Chrome Extension

Hi all, have just started using KM and am wondering how to open a chrome extension (google Spaces) with it? What action do I use to achieve this?

The easiest way is to use a keyboard shortcut that has been assigned to the Chrome extension. Many extensions provide a setting for shortcut key. If yours does not, then there is a Chrome extension that lets you assign shortcuts to any extension. I think it is called "Shortkeys".

then use the KM Type a Keystroke action.