Entrypoint refers to the identity of a site in a multisite deployment for which the authentication type needs to be confiigured. ...

Entrypoint refers to the identity of a site in a multisite deployment for which the authentication type needs to be confiigured.
If an entrypoint is not specified in a multisite deployment then the entrypoint to which the server on which the cmdlet is executed belongs is used. The server could also be represented by using the ComputerName parameter.
If both entrypoint and ComputerName are specified and the ComputerName doesnt belong to the site represented by the entrypoint then the entrypoint takes precedence and the authentication type is configured for it.