You can disable Edit Permissions on Settings to prevent this.
I want the users to have permission to do this. The problem is we have to turn VisualCron off to run a VPN job that will disconnect the network from other scripts.
Here is what we do.
1. Click Server Off
2. Run VPN script. 10 minutes later its done.
3. Click Server On
What happens is sometimes we (users and myself) forget step 3 because we went and did other things while VPN script is running. What would be great is if in the VPN script it can turn Server off and when complete turn it back on.