When you select the NAT mode for a specific SSID, the AP will automatically assign a range of IPs internally (and provide NAT functionality as well). Hence, there is no need for the customer to have an external DHCP server for the clients in that SSID as the AP itself acts as one. This makes the configuration very simple.
Thanks for your feedback in the community and submitting your ideas. We have periodic software updates introducing new features and enhancements. Please keep a close lookout for these releases to see support for new features