I have two routers. I want one to be my primary and provide access to internet it is on the first floor connected to fios via coax. I want to place the second router on the third floor as a second access point to the same wifi supplied by the primary. When I reset them they both assign themselves to 192.168.1.1. How do I have to configure the second router to act just as another access point to my wifi and interfere with the funtion of the primary? I will be connecting the second router to the coax vios feed. I know for the second router I have to disable DHCP and use the first router for internet access but I am not sure what further settings I would have to do.