Where are the settings of Passthourgh Audio?

Hello how are you?
(im new to this)
i saw some Audio Configuration Guide like:
https://support.plex.tv/hc/en-us/articles/201214687-Audio-Configuration-Guide-Plex-Home-Theater

or

https://support.plex.tv/hc/en-us/articles/208053067-Settings-for-Plex-Media-Player

thats gives the option to change it but when i launch the PHL in my PC (Windows) i go to settings and i dont see any option of Audio configure or other things , only Media stuff but not actual system settings…

am i missing something?

thank you very much!

Those guides are for OpenPHT
or Plex Media Player respectively.
Both are not installed by default with Plex Media Server.

If you need audio passthrough, you need to install one of these additionally.
Here is the latest release of OpenPHT: https://github.com/RasPlex/OpenPHT/releases/tag/v1.6.2.123-e23a7eef