Fortigate virtual IP server load balancing configuration and debug – Yuri Slobodyanyuk's blog on IT Security and Networking
Fortigate - doing SNAT and DNAT on the same traffic in traditional and Central NAT modes how-to – Yuri Slobodyanyuk's blog on IT Security and Networking
Configure Virtual IP in Fortigate
Fortigate: How to configure Nat Port for Web Server on Fortigate – Techbast
One to one Static NAT in FortiGate Firewall - Fortigate