Fail over with multiple publics on both wans

[joshhboss]

Ive been doing a few events with pfsense in the last few months. And I use virtual ips and Alias for nat the clients through different publics for the larger networks. But now entering this next event i will have an additional set of publics with another providor and i was wondering what i need to do with the nat outbound rules in order for this to work. Ive been able to do this with just gateway groups and single ips per public but im a bit lost on how to do this with outbound rules like this.