Fortigate 200B can I use GBE Ports 9-12 also as internal switch along with FE Ports 1-8

Hello,

I have a Fortigate 200B.

I want to know if it is possible to use GBE Ports 9-12 also as internal switch by grouping them with FE Ports 1-8.

If possible, Please suggest how to do it via CLI / GUI.

Thanks