Dual WAN for internet and intranet

[angeloalfa]

Hi, I have an intranet 10.0.0.1/8 with DNS, Web Server etc with a 10.58.48.1 gateway that allows browsing across the intranet. I need some pc on the intranet to access the internet. I have configured a pc with pfsense 2.4.4 (IP 10.58.48.100) on the intranet with a WAN on the internet, how do I set rules such as that the pc with ip 10.58.48.48 use the gateway 10.58.48.1 for navigation on intranet addresses and the gateway 10.58.48.100 to exit on the WAN (internet)?
Thank you