I am looking for a resource, or to write my own, so that after a new user joins my server for the first time, and completes a small required 5-10mb download, they can then find a GUI that has switches for each of 10 or so additional download packages. On first switch selection it would start a new download of a 100mb modded vehicles resource. and once complete would auto apply these on every join. And if you push the switch later, would turn off the 100mb package. Or for some users they would never download anything.
I know how to save their selection, and ask if the files exist, and have for sometime had an unofficial copy and paste download from OneDrive that my friends add. I want to do this all in game with GUI, and no long explanations.
Does such a selectable download resource already exist publicly?
Or, how do I make a download begin from an in game GUI?