In the python console run: 

import zvparentmaster.ui

zvparentmaster.ui.show()

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) and uninstall as you would any other application from your system.

Linux and OSX: To uninstall this plug-in, simply delete the module directory from your system. The panel on the Plug-ins tab will not be removed until Maya is restarted.