So I have an AirPort Extreme and was wondering if anyone could tell me how to set static IP addresses for connected devices within Airport Utility, as I'm not the greatest when it comes to dealing with routers. I have a bunch of HomeKit accessories - IDevices switches and Philips Hue Bulbs - and I've been having some issues with these devices not being found from time to time, mostly when I'm away from home, even though I have an always-on Apple TV 4 acting as the hub. I read somewhere that setting static IP addresses for these devices could help but for the life of me I can't figure out how to do that on the AirPort Extreme. I'm sure I'm probably missing something pretty obvious. So, of someone could point me in the right direction, I'd be really grateful!