This quick guide shows you how to switch your ArmA Reforger server to the Experimental version using the Control Panel
Log in to your AA Hosting game panel.
Make sure the server is stopped and then select the Server Updater tab.
Select the "Experimental Version" in the dropdown and click Execute.
A new console window should appear. Wait for it to say its finished installing.
By following these steps, you will successfully switch your ArmA Reforger server version.