FG-100D as network switch

Hey everyone,

I am trying to setup a old 100d as a network switch. I have a netgear firewall infrastructure of the 100d. I was hoping to create multiple hardware switches for my diffrent subnets on my network and one for the internet connection from my router(I was using a normal port and not a WAN port). I then had them all added into a zone to allow traffic between them. I am trying to bypass the firewall portion of the 100d to allow for the bandwidth to stay above 1gbs hence why I am avoiding the WAN ports. What should I be doing to make this work? Is this even possible?

Thanks in advance for any help.