How do I download a solar system or planet on a Mac when using Juno New Origins on Steam

Hey everyone,

Firstly, I'm sorry if this is really obvious or been asked before (I can't seem to find anything at all on this when I google it or on this forum).

I'm trying to download a solar system, such as this https://www.simplerockets.com/PlanetarySystems/View/XiaL6J/Solar-System-2-1

But when I press the download button it offers a link, and says "Copy this URL to the clipboard and press CTRL+V while in the designer in Juno: New Origins to download this planetary system."

I've tried pasting the link when I'm in Planet Studio and also when in the Build area. I've tried pasting the link all over the place in Juno. Simply cannot figure out what it means to paste the link "when in the designer in Juno" and can't figure out how to download and use this solar system, or any planet really. I do not have this problem when downloading rockets or other craft.

If anyone can help would be super grateful!

I'm using Juno on Mac and using Steam.

Also, while I'm here if anyone knows whether it's possible to use launch locations other people have created, e.g. a launch location from the surface of Luna which I can then download and use? If so, where can I find such launch locations and how do I add them to my Juno?