Where does Sub-Zero.bundle folder go (under Plug-In Support)?

While testing my Plex backup script, I sort of messed up the %localappdata%l\Plex Media Server\Plug-in Support\Data\com.plexapp.system\DataItems\Deactivated folder. It used to contain the Sub-Zero.bundle, and I have a copy, but I do not remember if there were two or one levels, i.e. %localappdata%l\Plex Media Server\Plug-in Support\Data\com.plexapp.system\DataItems\Deactivated\Sub-Zero.bundle\Sub-Zero.bundle (i.e. two levels: Sub-Zero.bundle\Sub-Zero.bundle) or %localappdata%l\Plex Media Server\Plug-in Support\Data\com.plexapp.system\DataItems\Deactivated\Sub-Zero.bundle (i.e. one level: Sub-Zero.bundle). Anyone knows?

Also, anyone has any idea what the purpose of the Plug-in Support folder is? Is it necessary?

Thanks.