RIght Click Submenu Selection PT

Hi Simon

Generally for popup menus, use the built in action "Open & Select Item in Popup Menu" in the macro editor.
There's no need to manually wait for the popup menu to appear or to navigate it, SF takes care of that for you.

You can see a video of how it works here:
https://www.youtube.com/watch?v=20ECpTUy_jk

For right clicking in the middle of the MIDI editor, you'll probably need a script.
Something like this could get you started:

function getCoordsOfMIDIArea(win) {
    var keyboardTable = win.tables.whoseTitle.is("TextGridView").filter(e => e.childrenByRole("AXColumn").count === 1)[0];
    var keyboardFrame = keyboardTable.frame;
    var winFrame = win.frame;

    var x = keyboardFrame.x + keyboardFrame.w;
    var y = keyboardFrame.y;
    var w = winFrame.w - x - 30;
    var h = keyboardFrame.h;
    var cx = Math.floor(x + w / 2);
    var cy = Math.floor(y + h / 2);

    return { x, y, w, h, cx, cy };
}

var midiEditorWin = sf.ui.proTools.windows.whoseTitle.startsWith("MIDI Editor:").first;
var coords = getCoordsOfMIDIArea(midiEditorWin);

midiEditorWin.popupMenuSelect({
    relativePosition: { x: coords.cx, y: coords.cy },
    isRightClick: true,
    menuPath: ['Insert', 'Chord Symbol...']
});

Please note however, while SoundFlow typically can read UI elements across the screen, we can't read the contents of the actual tracks, ie. the actual notes. I don't think we can read where the timeline insertion point is either. So for this particular usage, we may need a different approach.