I see that I need to go to Tools>Plug-ins>Plug-in Manager and here is where I get lost. Regardless of this specific plugin, I think it is high time that I finally learned this to be able to access what seems to be a whole world of available useful plugins out there. I found a Velux skylight from bimobject to download and it is a plugin, which I assume will then include some adjustable parameters to the skylight object. I fear this will make me seem completely clueless but even as I've used Vectorworks for decades I have never installed a 3rd party plugin and am not sure exactly how to do so.