Once you install the app. You can launch the command by typing “LVP” in the command line or by pressing the button “LVP” displayed in the ribbon-plugins tab. You will then be provided with two options: “On” and “Off”. Select “On”- if you want to lock all viewports or “Off” to unlock all locked viewports. The program steps through each paper space tab and model space tab and locks or unlocks the viewports.

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin. You may need to restart the Autodesk product to activate the app/plug-in. To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, click Control Panel > Programs > Programs and Features (Windows 7/8.1/10/11) and uninstall as you would any other application from your system.

Sometimes the app fails to lock or unlock some viewports. Clicking on each new layout before using this command seems to correct this.