Need to set up a reserved IP address for devices ON the router.
Then Setup a schedule:
To set up scheduling:
1. Reserve device IP addresses ON the router under Setup/Networking.
2. Set up a schedule under Tools/Schedule on the routers web page. Customize your dates and times here.
3. Set up the Filter.
4. Use Access Control under Advanced to apply the customized schedule to a policy and to the PC(s) desired to be controlled.