You should have to configure it.
DHCP Relay provides a way for DHCP clients to communicate with DHCP servers when none are available on its local subnet. A Relay Agent uses IP routing to forward discover messages to a provisioned DHCP server. The relay agent then relays the DHCP offer back to the client network.
I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.
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