adding dns on logn router

How to adding te data (WE) or google DNS on logn router page

open cpe page 192.168.1.1
 

choose advanced like first image

choose DNS configuration and add tedata or google dns like image 2

WE DNS

DNS 1: 163.121.128.134
DNS 2: 163.121.128.135

or

google DNS

DNS 1: 8.8.8.8

DNS 2: 8.8.4.4

 press apply changes

then Restart router

best regards