I have had e for a long time but know nothing about my topic. How can I tell if I can easily add one more receiver? I have 2, a 510DVR and a 211.I have the stars 119, 110, and 61.5 I think. Sorry if I sound like a dummy but when it comes to E installation I am. I can't hire E because I moved. What do I look for as far as switchs?Thanks