The following image shows this procedure step by step. Automatically select a data resolution based on the given timespan this overrides the value specified by the 'resolution' parameter. As such from the switch's point of view, the IP addresses used as source in the ARPs are not important: this feature can be used on devices with no IP address configured at all, so the IP source of 0.

I have tried checking and unchecking the 'dhcp Server' box and it makes no difference, still no ip's allocated.

Meraki switch not getting dhcp VLAN 10 is HSRP running switches and 3rd switch has also int vlan 10 configured.