Secure Devolutions Web Login for Terminal Server

As mentioned in https://help.remotedesktopmanager.com/index.html?devolutionsweblogin.htm you should secure the Devolutions Web Login when using RDM on a Terminal Server.

In an enterprise environment, you can not assume that every user makes the right settings.

So how can i force that Users cannot use Devolutions Web Login on Terminal Server, or generally that they cannot Use Devolutions Web Login with the Datasource.

Or that users have to set an Application Key to use Devolutions Web Login. (Devolutions Web Login should not work with no Application Key).