Port redirection on FVS336V1

I'm upgrading from a Draytek Vigor 2800 Router to a netgear FVS336GV1 Firewall.  On the Draytek,  the Port Forwarding setup allows me to set different public and private ports  - for example,  I have incoming WAN traffic on Port 2500,  but I redirect that to Port 25 on a  private IP.  I also have several devices on different private IP addresses, which I want to access on the private port 80 - with the Draytek,  I have incoming connections on different port numbers (eg 8070, 8080,  8090, etc.) which redirect to port 80 on different private IP addresses.

I can't see a way to replicate this configuration on the Netgear - Port Redirection only allows me to specify an incoming port and a private IP.