Installation instructions can be found on the GitHub page.
[b]4. Download the addon from GmodStore[/b]
Click "Download Stable" on the addon's GmodStore page
[b]5. Install the addon[/b]
Move the folder(s) which are inside the .zip you just downloaded from GmodStore into your server's garrysmod/addons/ directory [b](including the xeon-drm folder)[/b]
[b]6. Restart your server[/b]
(If it was running already)
[b]7. Activate your licenses[/b]
Join the server and follow the on-screen instructions - if you've already done this before, you probably won't need to do this again.