Hello PBembower,
Each controller that you add to LawnCheck is provided with 5 independent programs.
So, to add your second controller, click the "add device" button, and enter the name of your second controller, along with the zone names and optional GPM numbers. Click save. Both of your controllers should show up in your account screen.
You'll need to make sure that the device name that you use is the same name you used when you configured your EtherRain; and make sure your new controller has your LawnCheck account number configured in it and is set to "poll" mode.
To add programs to your second controller, click on the second controller in the listbox, then click the "select device" radio button, then click "Begin." The program schedule screen will be shown. It will be empty, you should be able to click a link on that screen to add a program to your schedule. Use a "smart landscape" program.
At this time there isn't a linkage between your two controllers so you have to manage the start times to ensure programs don't overlap.
Hope this answers,
Jim