How do I make panels have a different initial size?

[DuckyDoo11]

I'm trying to have a WebAmp widget that starts off with the Player and Playlist panel but no Equalizer by default. I figured out how to make the Equalizer go away, but I still need some way for the Playlist panel to fill up the empty vertical space.

What I want:

What I currently got:

If it helps, my current code as well (my personalizations excluded):
`

<div style="width:275px; height:350px;">
    <div id="winamp-container-2" style="width:275px; height:350px;"></div>
    <script>
        const Winamp = window.Webamp;
        // All configuration options are optional.
        const webamp = new Webamp({
            // Optional.
            windowLayout: {
                main: { position: { left: 0, top: 0 } }, size:[0,0],
                playlist: {
                position: { left: 0, top: 100 },
                size: [0,0],
                }
        },
        
        });

        webamp.store.dispatch({ type: "CLOSE_WINDOW", windowId: "equalizer" });

        webamp.renderWhenReady(document.getElementById('winamp-container-2'));
    </script>
</div>

`

[DuckyDoo11]

Nevermind, I figured out how to do this on my own, I just added the following:
__initialWindowLayout: { main: { position: { x: 0, y: 0 } }, playlist: { position: { x: 0, y: 116 }, size: [0, 4] }, },