Hello. I am new to the thread and this is my first post. So recently, I tried to set up another guest account on my wifi router. The model I have is an actiontech 1900 nighthawk modem which supports the ability to create separate guest accounts. However, I am having difficulty creating a separate subnet. Whenever I do try to set up a new guest network, I am notified to pick a new subset different that isn't already in use. My goal is to completely separate the guest network from the first SSID. My router address is 192.168.0.1. In order to do what I want I need to fill out the correct information for the DHCP (DNS intervals), subnet mask (255.255.255.0), a gateway address, and then connect that to an IP address and hope it functions. My provider is centurylink. I am pretty new to networking and would like to be run through the steps as well as where to go within the settings. Any help will be appreciated. Thank you.