Is a spawnlist necessary when uploading models?

Im about to upload some models, and im not familiar with the new workshop system. I was wondering if it was necessary to include a spawnlist when uploading models, or will they just show up under the browse/addons folder? Thanks.

They will show up. Not sure if the spawnlist not loading from addons bug was fixed or not, but if it was I would include one, they are nice.

You can’t include one, Workshopper wont allow you.