During a multiplayer game which is started on Recruit or Regular difficulty mode, every player have the opportunity to use "Commanding mode" to find out the range to any target or point at the area and check if this target friendly or not. The most terrifying method is when someone is searching for the enemy by holding Tilde ("Commanding mode") button and moving a mouse over the whole screen. And this method works perfectly since ArmA 2 and known as "Spacebar scanning"!

There is no any option for this feature in game difficulties configuration. There's no way to configure it for servers through configuration file. The only way to prevent people from using this ability is to run mission maps in Veteran or Expert mode because this modes have built-in parameter which makes "Commanding mode" disabled for them.

But a lot easier to use well-configured Regular mode and to have the opportunity to turn off "Commanding mode" manualy using a parameter in [profile_name].Arma3AlphaProfile configuration file. But there's no any parameter like "commanding_mode=0;" at this moment in ArmA 3.

Admins really need this parameter to be added for every difficulty mode in ArmA 3.