This guide will walk you through how to set up a DHCP server on an Aerohive AP using HiveManager (formerly NG)- https://thehivecommunity.aerohive.com/s/article/DHCP-Server-on-an-AP-in-NG
If you are asking how to attach the Aerohive set up to your backend DHCP, we just set the VLANs that the traffic will be using in the user profile within the SSID object, as long as that VLAN can reach a DHCP server, your clients will connect and pull an IP address as expected.
