This will give you more details on creating the app.conifg file and the available settings. The reason the setting did not work for me is that the file (app.config) needed to be in the root of the screenconnect application folder. Not in the App_ClientConfig folder that documentation leads you to create.

https://docs.connectwise.com/ConnectWise_Control_Documentation/On-premises/Advanced_setup/Create_the_app.config_file

Thanks! The issue was that the app.config in the App_ClientConfig folder didn't work for me. I dropped the same file in the root and it worked. Thanks for the assistance!

This did not work for me. I was personally looking for something that turns on "Suspend my Input" by default.