Dear @Lucky_strike,

hi i have loadbalance tl-r480t+ i want to make wan port number one for specific website for example facebook, and the rest of  wan port  for rest of internet .

q: this advantage is bultin in this device or not if not what can i do in this situation.sorry about my language,thank you

I'm afraid that your demand may be hard to achieve on the router.

If you know the IP address of the website, you could make it with the Policy Routing function.

Here is a configuration example for your reference. https://www.tp-link.com/support/faq/2134/

However, the challenge is that most websites such as facebook more than one IP address and might be changing.