Want to configure outbound trunk manually

Hi, I already work with asterisk but now tried to use FreePBX. I have installed it and it is working fine. I have 4 trunks from a US based voip provider, www.Axvoice.com. I want to use different outbound trunk based on the dialing number. As I heard that FreePBX uses the first configured trunk whose dial pattern matches the dialed number, so is there some way to manually configure the outbound trunk to be used for specific outbound numbers?

What do you mean by “a different outbound number”. Do you mean from a particular extention or from a particular DID?