Multiple internet routes

I'm trying to create multiple internet links in my XG450.

So far i've create the interfaces to the ISPs which are 3.

My question is this, do i have to create 3 0.0.0.0 routes for each ISP link?

I understand that everytime you add a new wan connection, the device will automatically balance the traffic between the links, but i also need to create the static route.

I couldn't find any post with this regard that could answer this question.

Thanks in advance.

Regards.