I was able to find this link which has a pretty good walkthrough for setting up parental controls! Take a look!
Parental Controls on ASUS AC68-U
The JRS Router is setup with 192.168.4.1 OR router.asus.com in the browser bar. The walkthrough shows a default IP address of 192.168.1.1 which is not accurate to the JRS router but is the only difference in setting up the parental controls. The user name and password will also be different which will be:
USER: admin PASSWORD: ( 8digit pin on the back of the router )
- Electrahealth Team
Customer support service by UserEcho