Use 1 wan for specific domains and the other for the rest

[MickyCarrasco]

I have an opnsense with 2 wan and 1 lan that I wanted to configure so that all the traffic would go through one of the wan except the one directed to specific domains that would go for the other one. How could I configure the output to these domains ?.
I understand by logic that a wan I put it by default and therefore all the traffic sent back to me there, but how do I send me on the other specific destinations ....