You begin by creating a new user account and I believe that you will need to know your RP access code. The default is 172839. If you changed the code and do not know it there is a way to reset the panel that I don't recall at the moment.
Then enter the user info and use XEP setup to find the Elk on the network. After configuring the XEP you can connect to the panel and receive all setting from the panel.
This is as well as I recall and should get you started. If you get stuck I'm sure that we can get any necessary details from the installation manual which you can download from Elkproducts.com.
Mike.