Mapping a public IP to a server using R201 LAN port

I need a little assistance with pushing a static IP down to a customer's R201 and to the specific LAN port for his server. I have pushed it thru the radio's and down to the R201 but am a little perplexed as to how to correctly map it thru the device to the customers server. I have looked online with no success...and guidance that someone could lend would be greatly appreciated.

Hi Jbuck,

In our router we have option of DHCP static allotment . You can use that to push a static IP through LAN port.  Go to Network-->LAN . At bottom of the page you will get DHCP static allotment , add your MAC and IP there .

I have done this for my local PC MAC. Please see attached screen capture also.

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) Ethernet Connection I219-LM
Physical Address. . . . . . . . . : D4-81-D7-CF-58-4D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::d70:d0ed:83a9:2b21%20(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.11.36(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 14 February 2019 11:16:07
Lease Expires . . . . . . . . . . : 15 February 2019 11:16:07
Default Gateway . . . . . . . . . : 192.168.11.1
DHCP Server . . . . . . . . . . . : 192.168.11.1
DHCPv6 IAID . . . . . . . . . . . : 97812951
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-21-41-FD-9D-D4-81-D7-CF-58-4D
DNS Servers . . . . . . . . . . . : 192.168.11.1
10.110.12.110
NetBIOS over Tcpip. . . . . . . . : Disabled

Wireless LAN adapter Wi-Fi:

Regards,

Nilesh