Your messing up the Client 'Site' and the Central 'Site', in SmartConsole you need to configure the Remote Access VPN Community to accept VPN Clients, you add your gateway here and you set how you want the authentication to be done.
On the client you add a ' Site' per VPN connection that you want to make, So when you have a GW in New York you want to add a Site called new York with the IP of the GW in New York, when you also have one in LA you add another Site for the LA Gateway.
The deployment tool allows you to pre-create those sites in the deployment package, once you created that you can install it on a Laptop and you will have the newly created sites.
I hope makes it a bit clearer?
Regards, Maarten