Fortigate - LAN & WIFI interface configuration and communication with both interface

Step 1 -  Configure the LAN & WIFI Interface by using different IP network.

Step 2 - Create an address for WIFI connectivity users & group for accessing and managing WIFI router.

Step 3 - Create a policy for internet access to WIFI users. We can also assign limited services to the users.

Step 4 - Create a another policy for LAN to WIFI interface, the main purpose is, if we need to access WIFI modem or devices we must create this policy and select the access only to assigned users or group.

After that check the communication status for Wifi users to Internet access.

That's it....