VLANs configuration

Hi,

I'm pretty new in Fortigate and I have a problem with VLAN configuration.

I have, for example, 3 VLANs and 2 ports on FortiGate and I want to configure them as follow:

Port 1: V1, V2

Port 2: V1, V3

I get it how to configure multiple VLANs on one port but I don't know how to set one VLAN on ports with different VLANs

Regards