PFSense route HTTPS traffic from different pubic IPs to internal servers

Hello. I have two static public IP addresses, one for Microsoft Remote Desktop Services, and one for FileMaker Web. Both use HTTPS. I'm trying to get traffic for each routed to different internal servers, using a Comcast Gateway and PFSense firewall, and I'm hitting a wall with my level of understanding.

Until now, we've only used one static IP, for RDS. I have NAT set on the Comcast Gateway to route all traffic on that IP to the WAN interface on the PFSense box. Then PFSense NAT forwards WAN traffic to port 443 on the internal RDS server. That all works fine. But I can't for the life of me figure out how to add the second public IP, forwarding to a different internal server, into the mix. Help?

Thanks,
Ron