D12 500 Receiver with Winegard MiniMax RV

Hi, I just had Direct TV installed in my home. I then took one of the D12 500 receivers to Camping World and they installed the Winegard MiniMax satellite dish. They changed the setting on the receiver. I cannot figure out how they got to the set up page to change the setting. Menu, Setup, System Setup, Satellite. I now get a screen that says View Signal Strength and Repeat Satellite Setup. When I select Satellite Dish Setup, I get a screen that has a lot of data and tells me to press DASH to continue. Is this the path to the changes that they made at Camping World? I a little intimidated about this process and want to be sure I doing the correct thing. If this is correct, I can get the proper setting for home from another receiver and record the current setting on this receiver for use with the RV. Thanks in advance for your help. Terry