Tenda A6 User Manual page 70

Wireless N150 Mini AP/Router
For example: If you want to disallow only PCs within the IP range
of 192.168.2.20~192.168.2.30 on your LAN to access only
websites containing "yahoo" from 8 ： 00 to 18 ： 00 during
working days: Monday- Fridaywhile not restricting other PCs,
then config same settings as shown on below screenshot on your
device:
Click "Save" to display page below:
64