You can get an idea of some of the possible ways to extend your LabVIEW installation by looking at VI Package Manager's “Destinations” page:

eg. C:\Program Files (x86)\National Instruments\LabVIEW 2020

eg C:\Users\admin\Documents\LabVIEW Data

<LabVIEW>\vi.lib\

<LabVIEW>\examples\

<LabVIEW>\vi.lib\_probes\

<LabVIEW>\project\errors\

<LabVIEW>\help\

<LabVIEW>\templates\

<LabVIEW>\wizard\

<LabVIEW>\project\

See Tools Menu

<LabVIEW>\help\

<LabVIEW>\ProjectTemplates\

<LabVIEW>\resource\Framework\Providers\

See Project Provider

<LabVIEW>\resource\dialog\QuickDrop\plugins\

See Quick Drop Plugins

<LabVIEW>\vi.lib\G CLI Tools\

Custom: <LabVIEW Data>\VI Analyzer Tests

Built-in: <LabVIEW>\project\_VI Analyzer\_tests\