Welcome to the forum Viper73.
Skins can only define colours and icons, and in the case of xmlc (bitmapped) skins, the look and layout of the player panel bar.
You are looking for the 'Column Browser'.
By clicking the 'Arrange Panels' button, you can then activate it in the settings panel.
When the column browser is displayed in the main panel, you can right-click on it's header bar for further adjustments.
You could also create a keyboard shortcut and/or a toolbar button to quickly toggle it on/off.