Does SimpleHelp have this Lock On Connect option like ScreenConnect
https://docs.connectwise.com/ConnectWise_Control_Documentation/Supported_extensions/Administration/Advanced_Configuration_Editor
Lock on Connect
Force a remote machine to lock itself when a technician connects to it. This will force the technician to enter credentials before gaining access to the machine.
To turn on Lock On Connect:
1. Install the Advanced Configuration Editor extension
2. Navigate to Administration > Configuration > Other Settings
3. In the row Lock Machine On Connect , select Support and Access
4. Click Save & Apply