Installation
Installation is the same as Standard edition only download latest point_cloud_visualizer-pro-*version*-*platform*-*architecture*.zip (note the pro in zip name).
Platform compatibility and Blender compatibility is also the same and included libraries as well.
Upgrade
Please don't try and install both Standard and Pro editions at the same time. Pro edition include full Standard edition anyway, so you only need to install Pro distribution zip to have both.
If you are upgrading from Standard to Pro, it is the same procedure as updating, i.e. uninstall previous, restart Blender, install new, this time latest version of point_cloud_visualizer-pro-*version*-*platform*-*architecture*.zip (note the pro in zip name).