how do i make a Zombie Survival server?

Hi guys, where do i get the files to make a zombie survival server?
here is a link of the gamemode i want.

if you guys say get the files from that link, please tell me where in that link.

Click Subscribe. In addons theres a .gma file you need an extractor to get the files.
btw wrong section, bump.

This is the correct section. Also, host the gamemode file on your server by using an authkey and a workshop collection.