When you add the package to your project through the project manifest, Windows, macOS, iOS, and Android Vivox .lib files are automatically added to your project.
If you need access to Core, Unreal, or NDA-dependent Unity platforms (Xbox, PlayStation, Nintendo, and Stadia), you need to sign up for an account in the Vivox Developer Portal.
Vivox Developer Portal
During application creation, you select the engine and destination platforms. These selections are used to provide a list of suggested SDKs for each application.
To access the application, select the application card on the App Dashboard. The list of suggested SDKs is available on the right side in the OUR LATEST SDKS section.