Choosing your server software
The Software tab offers a single branch for Unturned: Public. There's no beta or experimental branch to switch to. Software changes on this tab require a restart before they apply, and the panel will warn you about this before you confirm — schedule it for when players aren't active.
Next steps
Once you've set your branch, check the Console tab to confirm the server boots cleanly. Unturned supports Steam Workshop mods, browsable and installable right from your server panel — see Installing Mods on Unturned for the full walkthrough. Set up Managing Backups & Restoring Your Server before making bigger changes, and use Scheduling Automatic Server Tasks for recurring restarts.