Configuring outbound policy for devices

[Jedis]

Hello,

I am coming from using Peplink switches. They had the ability to configure what they call "outbound policy". Basically, I could assign an IP or MAC address and assign which interface it would use for outgoing traffic.

For anything not directly assigned, it would fall through to the Default rule at the bottom, which you could weight each of the WAN connections.

Where do I go to configure something similar in OPNsense?

Thank you!