I recently purchased a D-Link AC 1200 to add to my D-link-8900 so that we can get faster internet. I am planning on turning the D-link 8900 an AP, one of the steps it asks me is to disable my UPnP, DHCP, and WAN denpendant featurettes. But the thing is I don't know how to go about it. Which page should I disable them in. Or how to change the LAN IP address. I'm not that good at internet tech.