PSN Sample
Installation
1) Create a new Unity project and install the package, see Installation) for details.
2) Install the PSN Sample from the package manager window by clicking the Import into project button.

3) Switch build settings to PS5
4) To setup the project settings select the two menu options in (menu: SCE Publishing Utils)

Set Publish Settings for PS5 will update the publishing settings section (in the Player Settings). This will include a link to the samples param.json file and PlayStation Network package metadata file npconfig.zip
Set Input Manager will update the input system will a gamepad layout compatible with the PS5. Without this the sample app won't be able to recieve input from multiplay player gamepads.
5) Open the PSNSample Unity scene located in Assets/Samples/PS5 PlayStation Network/version/PSN Sample/}
The version number will depend on the package version.
6) Add the scene to the Scenes In Build list, as scene 0, and build the project.