Amahi is set up as the DHCP server. I have DNS set up from my gateway to use Pi-hole, but when I do any sort of nslookup, it's showing my Amahi server as the DNS. I saw the Conditional Forwarding, and I've tried setting it for my router's IP and Amahi's IP.
Amahi is set up to manage DNS and DHCP. There are several webaps that it has DNS alias's for. If you don't use it for DHCP and DNS, much of the functionality of the server goes away.