At the Active DHCP Leases part you can see the list of the devices, which given their IP addresses
from the router’s DHCP service (with the renewal
lease time).
In the Static Leases part you can
devices to always provide the same dedicated IP address
by the router. This can be required by adding values to the Hostname, the MAC-Address and the
IPv4-Address.
When you have modified the settings, save them by the
Save & Apply
button.
3.5 DNS settings
You can configure the DNS service from the Network / DHCP and DNS menu, with chossing the
Advanced Settings
tab.