Allowing all subnets

FortiGate 60E

I'm trying to allow two subnets on one port so they can talk to each other. 

10.10.0.0/24

10.10.8.0/24

I have interface 1 configured 10.10.0.3/24 with a secondary IP of 10.10.8.1/24

The next step is where I'm not sure of. Do I need to do anything with Virtual IP? Or IPv4 Policy?