Fortigate FW Configuration tips

[rajaram]

We have four firewalls in our network. Two are core firewalls in HA, and another two are production firewalls in HA. As of now, the prodcution firewall acts like a hub. The core firewall is the DHCP IP release interface to the prdoction firewal. 

what im asking how can i use the production firewall to secure the network from external network? cctv or office network.

please share you configurate details on the both the firewall